Getting rid of cockroaches using ultrasonic devices

10/15/2018 Category: Cockroaches Author: Valery Viktorov

Of all the currently existing methods of combating household pests such as cockroaches, the most effective is considered to be disinfestation of the contaminated area with pesticides. However, it is not possible to use poison always and not everywhere, and here special devices - repellers - can come to the rescue.

• 2 Ultrasonic devices
  2.1 Do cockroaches experience a sense of fear when using ultrasound?
• 2.2 Advantages and disadvantages of ultrasonic devices
• 2.3 Rules for operating the cockroach repeller

Ultrasonic cockroach repeller

An electronic repeller is the dream of many people who are faced with an insect problem at home, in a warehouse or in production.

The idea of ​​an easy-to-use and effective remedy excites the mind, as it promises quick relief from parasites without much effort. However, the enthusiasm of users often fades after the first attempt to use the product in a real fight against cockroaches.

Let's try to figure out how much electronic devices can really help.

How effective are repellers?

There is still no consensus on what the results of using cockroach repellents are. Some people think that the product does not cope well with its intended purpose and negatively affects the health of its owners, while others admire its work and believe that it really helps.

The fight against parasites has been ongoing for a long time. Chemicals and toxic substances are used, but this is an extremely unsafe method. An electric repeller is easy to use, hassle-free and less dangerous. The devices produce sound at a high frequency from 18 kHz. Animals and people are not able to perceive such a frequency, but harmful insects are susceptible to its influence. Fumigators drive away cockroaches best if sound waves of different frequencies are used.

How to get rid of cockroaches

The insect control industry today is replete with all sorts of chemicals, traps, and baits that are designed to rid you of annoying neighbors.

If you decide to do your own pest control, then at the hardware store you can find a great variety of devices and preparations that promise to put an end to the pest threat in your home.

We list the most popular means:

• Aerosols;
• Liquid chemicals;
• Powder preparations, dusts;
• Cockroach glue;
• Poisoned baits;
• Electronic traps;

Tornado OTAR-2

The manufacturer of the Tornado brand produces many drugs against cockroaches, but the Tornado OTAR-2 model turned out to be more effective.

Characteristics:

• Russian manufacturer.
• Double impact. In addition to sound waves, the device also emits light waves.
• The best place to place the Tornado repeller is to hang the product in the kitchen under the wall cabinets.
• For convenient placement there is a swivel mount.
• Price - 1000-1500 rubles.

Tornado brand repellers have both positive and negative reviews. Many people say that the number of cockroaches has decreased significantly, but over time they come back again.

Repellers: ultrasonic and electromagnetic devices

The most popular means of self-control are baits and aerosols against cockroaches. Although the choice of product usually depends on the case, sometimes it is more profitable to use traps or powders.

Let's start with the fact that there are two types of electronic repellers:

• Ultrasonic. When people talk about electronic devices, they most often mean ultrasound. The device operates by emitting a high-frequency sound that is not audible to humans, but which should have an effect on the insect. There is plenty of evidence that ultrasonic devices have no effect on cockroaches.
• Electromagnetic. It is claimed that the device creates an electromagnetic field in which cockroaches cannot be located. The waves affect their nervous system and cause the parasites to flee. This tool is also called magnetic resonance imaging.

Both types of devices are powered from a wall outlet in the same way. Manufacturers claim that as soon as you turn them on, they will immediately begin to repel all insects within the range.

In any case, it becomes clear that the electronic device does not destroy cockroaches, but only forces them to leave the place. If the reasons for the appearance are not eliminated, they will return again immediately after disconnecting the device from the power supply.

How to choose

To avoid making mistakes when purchasing a repeller, you should consider:

• Radius. The area of ​​propagation of ultrasonic and electric waves depends on the size of your apartment or other type of housing. Coverage on average from 60 to 500 sq.m.
• Functions. If you need a repeller solely for prevention, then it simply doesn’t make sense to take frost-resistant devices with a high frequency.
• Consumption. Devices of this type consume little, but pay attention to the number of watts consumed, otherwise a considerable amount can accumulate in a month.
• Price. The price tag of the repeller depends on the rooms in which it is intended to be located and with what frequency it works. But the fewer square meters are covered, the correspondingly lower the cost of the device should be. Please note in advance to avoid overpaying in the future.

Types of electronic repellers

The electrical engineering industry today is replete with all kinds of insect control products. Let's look at several devices of different price categories and try to draw a conclusion about their effectiveness.

Typhoon LS-500

Typhoon LS-500 is a Russian development. Device price: from 900 rubles. According to user reviews, it is not the most effective remedy.

In mid-February, a parcel arrived from. Typhoon was hung on the wall in the kitchen. And for a month now, not only have the cockroaches not decreased, but they have also increased. They found a place for themselves behind the device itself and won’t move their ears!

WK – 600

A powerful industrial device with several operating modes: against rodents and insects. The price is quite decent: around 5-6 thousand rubles. Weight: 600 grams.

The device is powerful enough to repel not only cockroaches, but also mammalian rodents. Disadvantages: affects humans, suitable for use in industrial facilities.

The work is simply amazing. My neighbor even joked and said I’ll soon complain about you. When we moved, I installed the repeller literally for one day.

She came running to us in the morning in shock... She had everything dug up there - they ran away from us. Those. very, very cool, I'm very pleased. We are waiting for this summer, we have a small area - we will install 2 things so that everything is covered.

Zenet XJ-90

Price: about 1000 rubles. Coverage area: 30-40 square meters. The manufacturer offers stylish design and long service life.

This device is a modification of the Air Comfort XJ-90, which already has low effectiveness against cockroaches and has earned a bad reputation.

For several nights when this device was running, mosquitoes really did not bother me. Now I understand that they simply were not in the apartment. And then one terrible night it all started!

It felt like mosquitoes from all over the area had flocked to us. My husband and I didn't sleep half the night. Then they covered their heads with blankets and passed out. And the “scarer” glowed with its blue eye, but to no avail.

Banzai LS927

Manufacturer: Taiwan. Price: about 1500 rubles. Designed to act against several types of insects. There are two modifications: for industrial use and residential version.

The industrial device affects cockroaches, while the apartment version leaves much to be desired.

The LS-927M is noisy compared to home models. But it is not intended for an apartment. We used it in a hangar, before that we tried a regular home model (from a different manufacturer), it got a little better, but the mice still remained.

Also on the market of electronic repellers there is a wide range of ultrasonic devices against cockroaches and other insects. Demand for them increased after users began to refuse to use ultrasound due to its low efficiency.

The new generation device was supposed to save users from parasites, but in the end the situation repeated itself: the Internet is full of negative reviews about the work of cheap (1-2 thousand rubles) insect repellent devices. Among them are: Eco-sniper AR-120, Rest Reject, Ixus KY-6182.

Typhoon LS 500-700

A domestic product that can repel insects, even mice. The impact radius varies from 80 to 200 m, depending on the purchased model. This device shows the best results compared to all other repellers on the sales market. The power of the Typhoon repeller is 4 W.

The cost of the repeller varies depending on the region, the price varies from 920 rubles to 1500 rubles.

Why does ultrasound not work against cockroaches?

The concept of repelling insects using ultrasound originally came about when scientists noticed that mosquitoes use it to communicate.

Certain frequencies had a deterrent effect on flying bloodsuckers because they signaled the approach of predators. Manufacturers quickly began assembling such ultrasonic devices and they flooded the market.

But what is true for mosquitoes does not work against cockroaches and bedbugs.

Indoor insects do not use ultrasound to communicate and warn of danger. The squeak has no effect on them. The effectiveness of high-power industrial devices is explained by the high intensity of the sound produced. It is so powerful that it irritates everyone, including humans.

Thus, we can conclude that the effectiveness of ultrasonic and electromagnetic devices is greatly overestimated. They can only affect cockroaches with high power.

However, powerful devices also affect humans and are poorly applicable in residential areas. It is not safe for a person to be near them for a long time. Therefore, powerful ultrasonic units are used mainly in production and warehouses.

Source: dezecoclean.ru/informaciya/tarakany/otpugivateli/

How do ultrasonic cockroach repellers work?

Finding a house without cockroaches is almost impossible. Black, red or red insects settle with equal pleasure in clean, lived-in apartments and in garbage dumps, abandoned houses and sewer mines.

Not only is the neighborhood unpleasant from an aesthetic point of view, pests are carriers of pathogenic microorganisms and can cause allergies and transmit cholera and other diseases.

It is also worth knowing that cockroaches do not disdain to feast on all possible products and enjoy damaging wiring, mechanisms and electrical appliances.

The female’s fertility is enviable; in one season she is capable of completely renewing the ranks of the “cockroach army,” which causes significant damage to a person’s peace of mind.

Pest control has been going on for several millennia, but today a way to eliminate it has been found - these are cockroach repellers. Safe for human health and pets, the anti-cockroach device will successfully deal with insects of any type and in any quantity.

Advantages of ultrasound products

• Safe for your health and the health of your loved ones.
• Does not affect pets.
• Easy to use. You need to plug the repeller into a power outlet and it will start working.
• Non-toxic. There are no unpleasant odors or chemical fumes.
• Silent for humans and animals.
• Long period of use.

Why ultrasonic repellers help get rid of cockroaches better than all other methods

If an electronic repeller seems like an expensive idea, consider other possibilities and ways to eliminate the threat:

• Spray, dust, aerosol. They have a pungent odor, are no more than 30% effective, and are harmful to humans and domestic animals.
• Powders, gels, baits. They have a limited resource, are expensive, and the efficiency is no more than 45%.
• Traps with bait. There are many fakes that cannot be recognized in advance. Only one or two insects will fall into the traps; the rest quickly learn to bypass the bait.

You can call a pest control agent, the service is expensive, rationality is questionable. The problem is the rapid adaptation of insects to the compositions used.

Each new generation of pests has partial immunity; it becomes more difficult to deal with them, and therefore more expensive. The easiest option is to buy cockroach repellers.

Electronic devices help eliminate the problem using ultrasonic or electromagnetic waves, aromatic substances. The volatile device operates on batteries or connected to the mains power supply.

Ultrasound or an electromagnetic wave affects the insect's nervous system, causing panic and forcing it to leave the dangerous habitat.

There are 4 types of cockroach repellers:

• Ultrasonic. The principle of operation is simple - the device generates and delivers a high-frequency sound wave (up to 1 GHz), which affects the nervous system of insects. For humans and pets, high-frequency waves are not audible and therefore harmless. The area of ​​influence depends on the power of the unit; as a rule, one device is enough for several rooms. Easy-to-control devices can be switched on when there are people and animals in the room.
• Magnetic resonance. These devices emit low frequency electromagnetic waves. For insects, such radiation means “danger”; cockroaches quickly leave their habitats. The disadvantage of the application is that the result directly depends on the power of the device, however, industrial units cannot be used constantly and when people are in the room. Low-power magnetic resonance insect repellers can be used in the presence of residents and animals, but the effectiveness is reduced to 45-60%.
• Electro-, aquafumigators. The operating principle of electric fumigators is identical to mosquito repellent devices with replaceable plates. Impregnated with a substance unpleasant to insects, the plates are inserted into the device compartment, and when heated, the composition evaporates, the smell repels pests. Aquafumigators have a similar principle, but they do not work with plates, but with a special liquid that evaporates when the electronic base is heated. The advantages are ease of management, but toxic impregnation compounds can cause allergies and are dangerous for pregnant women. In addition, aromatic plates and liquid must be constantly purchased, which increases maintenance costs.
• Fumigators are considered effective devices, but the safety of use is questionable. An electronic ultrasonic device for cockroaches is more expensive, but is absolutely harmless to everyone except whiskered pests of any type. Taking into account the long service life and frequency of switching on, the unit will pay for itself in just a few years.

Repeller "Banzai LS927"

The Taiwanese device has more positive reviews than the Typhoon ultrasonic cockroach repeller in terms of its effectiveness on insects. It is more powerful, and indeed after a month the cockroaches leave the room. But the manufacturer honestly warns that the radiation is harmful to people and pets.

It turns out to be a kind of paradox: insects leave the kitchen, this is true, but they go into rooms where the appliance cannot be used due to harmful effects. In this case, why is it needed? You can completely use effective and inexpensive means, for example, low-toxic insecticides.

How the devices work and their advantages

Ultrasonic cockroach repellers affect insects regardless of their age and size. The devices help disrupt the normal circulation of fluid inside the body of pests.

Due to the transformation of liquid into a thick substance, the cells of the cockroaches body burst from excess pressure.

Once in the affected area, the body of cockroaches heats up sharply, which causes excessive vibration of the cellular system, disrupts metabolism, and destroys neural connections.

You cannot get used to such an effect, which makes insect repellers effective in 100% of cases during long-term or short-term operation.

Humans and large animals (cats, dogs) do not hear the sound signal, which makes the cockroach device safe for them. The main thing is that the modules work perfectly against cockroaches, mosquitoes, flies, fleas and other insects, but are harmless to owners of apartments and houses.

Cockroach repellers have a wide list of advantages:

1. Quiet operation. Domestic cockroaches are afraid of any sounds, light and can react to odors, which makes other models ineffective. An ultrasonic device for cockroaches does not make noise or vibration, which is why it is considered the best.
2. No smell. Allergy sufferers are familiar with the feeling of hopelessness when they need to save themselves, but it is impossible to breathe the aroma of insecticides. The electronic repeller is completely safe, there are no restrictions on use.
3. The room does not require preliminary preparation. Installation of the device is simple - install it in the desired area, plug it into the network. Compact modules fit comfortably into limited areas. Small-format models can be lowered into the ventilation hole, from where domestic cockroaches most often crawl into the apartment.
4. Versatility of use. The anti-cockroach device will work equally well in a factory workshop, a temporary or permanent home, an apartment or a basement. The main requirement is to select a high-quality mechanism with the required power and coverage area. All parameters are specified in the technical data sheet, so you should carefully read the instructions before purchasing.

Cockroach repellers are reusable units with a long period of action. Remote modules provide quick and long-lasting results. For prevention, the models are put into operation for another 2-3 days for a short time, after which you can forget about insects.

About the results

You should not think that by installing the device, you will immediately get rid of insects. Some time must pass for insects to enter the device's coverage area.

It should be remembered that the walls of cabinets absorb ultrasonic waves and reduce their effect to nothing. Even a thin curtain can act as a barrier to high frequency waves. For this reason, the devices are installed in such a place as to obtain the maximum possible area coverage.

Positive and negative feedback on performance is approximately 50/50 in number. Some users claim that they are satisfied with the effect, the other half claim that they did not notice any changes.

Measures to prevent the appearance of cockroaches

It is not enough to install cockroach repellers; you need to create the most uncomfortable conditions for the subsequent appearance and reproduction of pests. As soon as domestic cockroaches appear, you should get rid of the uninvited guests. Prevention is as follows:

• Conduct a general cleaning of the premises (if possible). Remove food from public access, shake all bags of cereals and pasta. The easiest way is to place supplies in airtight glass or plastic containers. Pay special attention to bread, pastry and sugar - these are the favorite delicacies of pests.
• Check the pipeline for leaks. The main areas where insects are located are damp and dark places. Cockroaches need a source of water for rapid growth and raising offspring.
• Do not leave dirty dishes with food out overnight, put food away, clean out cabinets, and keep the kitchen, bathroom, and powder room clean.
• Crumbs on the floor will quickly attract hordes of pests, but getting rid of them will be more difficult.
• In damp rooms, ensure good ventilation. Condensation on the walls, remnants in the soap dish, rot in the area of ​​pipe joints, mold - all this is the favorite food of insects.

If a garbage or ventilation shaft in a multi-story building is clogged and has not been cleaned for a long time, it is a breeding ground for insects. A cockroach repellent device will help here for a short time.

To clean the channels, be sure to call a technician from the management company. In order for the cleaning to be done quickly, you need to write an application addressed to the director of the management company - according to the law, the director is obliged to respond to the signal and put the common property in order as quickly as possible.

It is interesting that in private houses made of wood, cockroaches practically do not appear. But here you can find various woodlice, spiders and other equally unpleasant guests in abundance.

The electronic repeller also works against these “neighbors”, and at the same time will prevent the appearance of “red mustaches”.

List of popular cockroach repellers

The list of models that are worth paying attention to is compiled based on real customer reviews:

If you still have questions about choosing a device that is suitable for individual conditions, the manager will help you understand the characteristics and capabilities of the repellers.

The price of ultrasonic modules is higher than aromatic plates and other products, but the investment pays off after 2-3 years of use. At the same time, cockroaches do not have a single chance to be placed in a house or apartment.

In addition, repellers work in the most humane way. There is no need to kill anyone, the pests will leave on their own and absolutely voluntarily.

Source: eco-sniper.ru/blogs/dachnye-otvety/kak-rabotayut-ultrazvukovye-otpugivateli-tarakanov-i-kakoy-vybrat

Electromagnetic devices

Electromagnetic repellers use a different principle of influencing pests. The operation of this class of gadgets is based on the generation of low frequency electromagnetic waves. The radiation spreads along the electrical network wiring, thus covering all rooms in the house where electricity is installed.

Just like ultrasonic devices, electromagnetic repellers only affect cockroaches while they are turned on.

Household appliances that emit low-frequency electromagnetic waves are often not powerful enough to seriously harm insects. In particular, this is due to the strict safety requirements. An increase in output power has a positive effect on the effectiveness of repellers, but at the same time the danger of exposure to radiation increases.

Powerful electromagnetic repellers can be used indoors only in the absence of people, so their use has become more widespread in industrial enterprises, warehouses and bases. However, even quite expensive professional devices do not provide a 100% guarantee of complete elimination of pests.

Inexpensive and ineffective household repellers can be used as part of comprehensive control and prevention of cockroaches together with insecticides.

EcoSniper AR-120

The AR-120 model is a device using the magnetic resonance radiation principle. The device operates stationary.

According to the manufacturer, studies have shown that EcoSniper AR-120 does not have a harmful effect on humans and domestic animals, while being a powerful irritant of the nervous system against pests such as:

• ants,
• cockroaches,
• fleas,
• spiders.

The EcoSniper AR-120 device may be useful where it is not possible to get rid of cockroaches using traditional methods.
The device does not emit any harmful chemicals. Can be used simultaneously with insecticides. Other features include:

• no influence on the operation of electrical wiring and other devices,
• the device does not generate radio interference,
• There are built-in indicators to monitor the operation of the gadget.

EcoSniper AR-120 can be used at such facilities as:

• Living spaces,
• public catering places (including catering units),
• kitchens,
• clinics,
• warehouses and bases,
• farms and livestock farms.

Reviews about EcoSniper AR-120

I liked the fact that the repeller acts not only with ultrasound, but also propagates waves along electrical wires, that is, exactly where these parasites crawl. What must I say, in the first 2 weeks the result was very doubtful, of course we were warned that we needed to wait 2-4 weeks for the effect, but like a real Russian person, I want everything at once! In general, after 2 weeks of waiting, we began to get the first results, the cockroaches became fewer and fewer, and after a month they completely disappeared. So far we have been living without problems for 2 months, we do not remove the repeller from the socket, it does not interfere, let it be for prevention.

sabinaole

https://otzovik.com/review_3309697.html

We moved to a new rented apartment, it seems to be in good repair, entrance. But the neighbor let us down, he got a drunkard who didn’t have any living creatures in his apartment. People came to him to poison his insects, and they rushed to us! My wife and I grabbed our heads, we were already getting ready to move out - who would like such a neighborhood? We decided to try the cockroach repeller, of course we expected the effect from the first day (you need to read the instructions properly), we were even upset that nothing happened in the first 3 days. But on the fourth day there were fewer of these bastards! And after 2 weeks they disappeared completely!

Ivan

https://www.eco-sniper.ru/product/ekosnayper-ar-120-magnitorezonansnyy-statsionarnyy-otpugivatel-tarakanov

Riddex Pest Repeller 1468

This is perhaps the most advertised device for repelling insects and rodents that uses electromagnetic radiation. The manufacturer promises stunning results in just two weeks, however, according to user reviews, the device actually does not function very effectively.

The electromagnetic device Riddex Pest Repeller 1468 repels pests without killing them

Riddex Pest Repeller can be used:

• in any residential premises,
• at public catering points,
• in any non-residential premises.

The device can be used against:

• rats and mice,
• cockroaches, bed bugs, fleas and spiders.

The device remains operational at temperatures from -30 to +40°C.

User reviews

We bought this repeller for cockroaches, but it turned out to be a repeller, there were even more cockroaches, and they gathered in crowds on this repeller. Don't trust advertisements and salespeople.

lisi4ka-lis

https://otzovik.com/review_1126945.html

Riddex was recommended to us by friends whom we visited and noticed this device. They said the cockroaches had completely disappeared. We ordered from the online store and waited. I dreamed that as soon as I plugged it into the socket, I would see cockroaches dying in convulsions and their complete destruction. But it wasn't like that. They connected it, it worked for 2 months. It was promised that in 2 months the cockroaches should disappear, but they kept running and running. I turned it off and put it in a drawer. They started poisoning in other ways, with dichlorvos, poison from the Colorado potato beetle, they already planned to call the sanitary and epidemiological station, so another 3 months passed. And then I remembered about Riddex, I remembered that when it was connected, there were still fewer cockroaches. We plugged it back in, and then I noticed that it was still working, I constantly found dead cockroaches on the floor, they began to crawl less than before. But they are not completely destroyed, during the day they are not visible at all, and at night there are a couple of them running around in the kitchen, which I kill whenever possible.

[email protected]@@

https://irecommend.ru/content/vse-taki-rabotaet-no-ne-tak-kak-khotelos

EMR-21

The electromagnetic repeller EMR-21 is a universal device and will help you cope with such annoying neighbors as rodents and harmful insects.

According to the manufacturer, EMR-21 is characterized by maximum efficiency and safety

Two LEDs of different colors serve as indicators of the repeller's operation. Green lights up when the device is turned on, red signals the beginning and end of the working cycle. The instructions for use for the device emphasize that it is not advisable to use the gadget in a room where there are decorative rodents. No negative effects on humans during operation of the device have been identified.

Reviews of EMR-21

It helped me, all the cockroaches went to the neighbors. I also offered them, but they don’t have the money yet. We live in a hostel.

Aliev A.A.

https://www.otpugivately.ru/katalog-tovarov/list/ot-tarakanov/otpugivateli-tarakanov/otpugivatel-tarakanov-emr-21

We live in a private house in a village, where there are of course a lot of insects and whatever you want, these are ants, flies, mosquitoes, cockroaches, and various bugs. With the birth of the baby, we immediately bought an ultrasonic repeller, we have been using it for more than a year, it works effectively and we forgot what insects are in the house, the baby and we sleep peacefully at night, forgetting that a mosquito or fly might fly in, nothing interferes with our sleep. It is also very convenient, the repeller glows like a flashlight at night, everything is visible, the baby has already grown up and we don’t have to turn on the light at night.

Inga

https://vrednet.ru/product/elektronnyj-otpugivatel-myshej-krys-i-nasekomyh-emr-21-elektromagnitnyj/

Table: characteristics of electromagnetic devices

Recommendations for using ultrasonic repellers

Are we scaring or luring?

If you decide to get rid of rodents using an ultrasonic repeller, then you will have to abandon other methods of “baiting”.

All other baits and traps must be removed. You cannot scare and attract at the same time. These are two opposing ways to get rid of mice and rats.

Using them together will not give any positive result at all. You will have the feeling that the ultrasonic repeller is not working.

Baits with poison do not enhance the effect of the repeller, but, on the contrary, reduce its effectiveness to zero. Rats (or mice) under the influence of ultrasound would have left your premises long ago, but the smell of food in baits or traps makes them come back.

Therefore, if we install a rat repeller, then we remove all the bait. Then it will be possible to really drive away all the rodents.

By the way, if you installed a mouse repeller the day before yesterday, this does not mean that you can now leave half-eaten sausage on the table.

Ultrasound does not pass through walls

First of all, let's take into account that ultrasound travels through the air, similar to light rays.

Imagine a table lamp. Will it illuminate the next room? 2nd floor? Basement and attic at the same time? Most likely no. Ultrasound works in much the same way. It does not pass through barriers.

It is reflected from hard objects and absorbed by soft ones. You can partially protect yourself from ultrasound even by covering yourself with a cape - just like from light.

Therefore, any ultrasonic repeller works effectively only within one room.

Ultrasound does not pass through walls and ceilings (floor, ceiling). And even the most powerful ultrasonic repeller is no exception.

Reflection and absorption of ultrasound

If there is no upholstered furniture, curtains, carpets or other soft objects in the room, then ultrasound, due to multiple reflections from the walls, ceiling and floor, fills the entire space as much as possible (Figure 1).

In this way, the best effect of the rodent repeller is achieved.

In rooms where there is upholstered furniture and other objects that absorb ultrasound, there will be a minimum of reflected ultrasound, or there will be none at all (Figure 2).

Here you can only count on the direct impact of the rodent repeller. In this case, it is better to use a more powerful ultrasonic repeller. The power reserve to a certain extent compensates for the lack of reflected ultrasound.

Nuances of effects on rodents

Ultrasonic repellers are designed to drive existing rodents out of the house, not to protect against one that is not there.

According to manufacturers who have actually tested their repellers, rats and mice simply get shocked by the ultrasound and appear numb at first.

From the point of view of their perception, it is unclear from where something unpleasant hits their “nerves”, causing severe discomfort. They are not able to immediately understand what is happening, so it often happens that in the first days of the repeller’s operation, people may see a rat running in circles or frozen in a daze.

After some time, the rodents begin to “understand” that something wrong is happening to them and try to get out of the ultrasound range. Therefore, the passports of repellers say that the time for rodents to leave is from 3-4 days to 3-4 weeks.

The manufacturer of the Tornado ultrasonic repeller said that one of his customers installed 4 powerful devices in the bathhouse, each of which could serve 400 m². And by morning, 16 mice were lying with their paws up - they had nowhere to go. The bathhouse was made to last, there was not a single hole in it.

There was another similar situation. One morning, after installing the appliances, the buyer opened the door to his shed and a whole family of rats with bloodshot eyes rushed past him through the door.

After such cases, a note appeared in the technical data sheets stating that it is advisable to leave a gap or hole into which animals can escape.

Battery repellers

Very often, with the onset of the winter season, people ask to be offered a battery-powered ultrasonic rodent repeller for installation in a room that is unheated in winter.

Dear comrades, batteries do not work in winter, they freeze.

On Chinese devices, which are mostly produced on batteries, the operating temperature of the device is not even noted. They only work at above-zero temperatures.

If you need to install an ultrasonic repeller in an unheated room where there is no electricity, then it is best to use a car repeller (for example, “Tornado-200 - 12K”), powered by a car battery.

Here the ultrasonic power is greater than that of a battery repeller, and the duration of continuous operation is many times longer.

Features of accommodation

Especially for small rooms (multi-room offices), we offer the Tornado-200 repeller for installation in each room. For apartments and country houses, we recommend installing at least one rodent repeller per floor, in the basement, or in the attic. In the basement - in each isolated compartment.

In apartments - in the kitchen or bathroom (where they penetrate through the riser). In warehouses, the number of devices is selected depending on the workload of the room.

Read more. It has been noticed that if there are canvas bags with food, feed, or something porous on the shelves, then the ultrasound simply “gets stuck” there. If you install one repeller in such a room, it will serve a very small area around it.

Therefore, in such a room it is better to install several ultrasonic rodent repellers. In other words, if there are racks, then the devices are installed in the spaces between the racks, regardless of the total area of ​​the room.

And finally, the only room whose footage can correspond to the footage specified in the technical specifications of the device is a room with shelving around the perimeter.

In this case, for a room of 200 square meters, you can install one repeller designed for 200 square meters. In all other cases, more devices are required.

Tips for choosing the right model

When choosing an ultrasonic repeller, experts advise paying attention to the following points:

• In the case of a residential apartment or house, purchasing a heavy-duty device is not a good idea. Or residents will have to leave the premises while the device is operating (which is 3-4 weeks). On the other hand, a device with low power is less efficient;
• There are repellers with an impact area of ​​up to one square kilometer, but such devices are again recommended to be used only in non-residential premises and open spaces. An alternative option is several repellers with an impact area of ​​25–50 square meters, one per room;
• In order not to run into fakes, it is recommended to purchase gadgets in specialized stores or from official dealers of the manufacturer.