Flies are annoying insects that, with their monotonous buzzing, deprive people of rest and sleep, and also damage food supplies by laying their eggs in them. You can completely get rid of fruit flies, house flies and other types of flies only with the help of bio-based chemicals (Raptor) or synthetic insecticides (Agita). However, their use in the home is not always possible or desirable. A fly repeller can provide reliable protection from uninvited guests and reduce their presence to a minimum. This article will tell you more about the features of the device.
The principle of operation of the repeller and its varieties
An ultrasonic fly repeller is a small electronic device that generates high-frequency waves. These are the ones that insects regard as a signal of possible danger. A similar sound that scares away flies is made by bats, which are the natural enemies of annoying pests. Flies perceive the frequency waves emanating from the device as a signal that an enemy is approaching and strive to leave the given territory as quickly as possible.
To repel flies the following are used:
- stationary repellers are large, high-power devices designed for use in large areas (in grocery stores, warehouses, large stores, markets);
- portable repellers are small in size and used to protect one user during a walk, outdoor recreation or hike; they can operate both from the mains and from batteries.
On a note!
Its cost varies depending on the type and power of the device.
Is it worth buying an ultrasonic fly repellent?
To begin with, it is worth noting that such devices are called repellers.
They are not insect killers, as they do not affect their body. Ultrasonic waves of a certain frequency can inform insects of possible danger.
Insects and animals cannot live in such conditions, so they try to go as far as possible.
The fact that ultrasonic waves have a certain effect on living beings became known several decades ago. But people began to use repellent devices not so long ago.
Ultrasound is unpleasant to insects, so they rush to leave the place
Experts note that some animals react very strongly to ultrasonic waves. We are talking about dogs, bats and even cattle. But when it comes to insects, everything is complicated. Not all of them experience discomfort from ultrasound. Therefore, such devices are not suitable for getting rid of some types of parasites. For example, devices for repelling cockroaches are often offered. But these insects practically do not react to frequencies that are harmless to humans.
If you use more powerful ultrasound, the cockroaches will scatter, but people who fall within the field of action of the device will risk their health.
That is why devices of this type have not earned the best reputation. However, the dubiousness of their work concerns mainly cockroaches. But with flying insects everything is much simpler and more efficient. Most of them, and primarily mosquitoes, cannot tolerate ultrasound, so they try to stay away from it.
Flies can disappear from the room if you use an ultrasonic device. But experienced users say that for this you need to use expensive devices from good manufacturers. You should not hope that a cheap repeller will be able to drive all the flies out of your house. Such devices work many times worse than the simplest fumigators with plates against flying insects.
What advantages does the device have?
Electronic fly repellers have become in demand among the population, as they have many advantages:
- Safety is the main advantage of the device. Devices in this category do not harm human health, because ultrasound does not kill flies, but only repels them.
- The effective operation of the device can be observed after just a few minutes of operation.
- Thanks to the creation of new design solutions, devices of this type are able to protect not only from flies, but also mosquitoes, as well as other flying pests. Ease of use is also created by the availability of a choice of the most suitable device in terms of size and power, as well as the method of its power supply.
- During operation, the device does not make noise, which does not create problems during rest and sleep.
- Easy to use.
Below is an overview of the most popular models of annoying insect repellers.
Ultrasonic fly repellers
AO-150
The ultrasonic repeller AO-150 will help drive flies and mosquitoes out of your apartment. The operating area of the device, which is harmless to humans, is 40 square meters. m. Simply plug it into the network, and after 15-30 minutes the buzzing of annoying insects will stop.
When the device is turned on, two indicators light up: a red light indicates the connection of the power supply, a green light signals the start of operation of the device.
On a note!
The repeller should be located no closer than 1 meter from the place where a person sleeps and rests.
The device has small dimensions (15x15 cm) and weight (160 g), is powered from the mains (220 V), has a power of 8 W and a wave frequency of 22-55 kHz. The cost of the AO-150 repeller is about 500 rubles.
Homemade traps
You can get rid of flies using a homemade trap. It can be done quickly and at no particular cost.
- The metal can is covered with tape and left in the sun. The tape must be removed so that the glue remains on the walls of the jar. An ultraviolet flashlight is placed inside it, which will attract flies and mosquitoes.
- Apple cider vinegar and detergent are poured into the jar and apples are added. The top of the jar is covered with a film with a small hole.
In addition, you can use the following options:
- The smell of vodka has a negative effect on mosquitoes. It is enough to spray a little liquid in the room, and insects will not bother you for some time.
- Essential oil emits a pungent odor that flies do not like. If you drop a few drops on the windowsill, flies will not want to fly to the window.
Harmless and fastest possible removal of insects has become the main reason for the popularity of repellent devices. But not all devices live up to expectations. Before purchasing a device, you should read the comments and pricing policy. It is not recommended to buy cheap repellers, as their ultrasonic waves are very weak and ineffective.
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EcoSniper UP-11
The leading position in the list of popular repellers is occupied by the EcoSniper repeller, the main feature of which is the presence of built-in modes: to combat rodents, as well as flying and crawling insects, including flies. Ionization of the surrounding air and night glow are an additional bonus of the device.
The device operates from a 220 V network and distributes ultrasound from flies with a frequency of 30-65 kHz over an area of up to 300 square meters. m, and therefore it can be used not only in a house and apartment, but also in a gazebo, veranda and any other semi-open area. The dimensions of the case are 9x10.5 cm, the weight of the product is up to 200 g. The cost of the device is about 1300 rubles.
Ultrasonic fly repellers
Weitech WK0 206
An effective new generation monoblock device for repelling flies in residential and non-residential premises up to 40 square meters. m., emits ultrasonic waves. The device does not require settings or maintenance, is safe for people and pets, and is silent, as it operates at a frequency the sound of which is perceived only by insects. It is connected to the mains, consuming a minimum of electricity, and therefore provides protection from buzzing pests throughout the summer season. The Weitech WK0206 repeller costs between 1400-1600 rubles.
Instructions for use
The author of the article studied the instructions for use for several models of insect repellers and made the following conclusions.
Ultrasonic devices for repelling insects, as a rule, do not require additional measures to prepare them for operation. Batteries or an accumulator are inserted into the stand-alone device, and the network gadget is connected to an outlet. Most manufacturers recommend turning on the device continuously for a certain period of time, depending on the model. A high-quality product does not have the tendency to overheat, make extraneous noise or emit an unpleasant odor. Typically, crawling insects leave the house after one to four weeks; subsequently, connecting the device is necessary for preventive purposes.
Video: testing ultrasonic emitters of different models
Please keep in mind that the above figures are not exact and depend on the brand and model of the repeller. In addition, it is necessary to take into account the load on the room with furniture, soft or hard objects, partitions, and other interior items. The device is installed according to a diagram as close as possible to the image below.
When installing an ultrasonic insect repeller, follow this diagram and recommendations
Mosquito Repeller ZF 801
Referring to reviews of the ultrasonic repeller, the Mosquito Repeller device is one of the most popular. It has 3 operating modes and is able to repel mosquitoes, flies, midges and other insects that fly into the house.
The device has an effective effect on an area of up to 30 square meters. m. The device operates from the mains, does not affect electrical appliances and household appliances, and is safe for people and pets. The price is about 1500 rubles.
On a note!
The ultrasonic waves generated by the repeller do not pass through walls and furniture. Therefore, it should be connected in an area that is free from foreign objects. Otherwise, the maximum effect will not be achieved.
Due to this feature, the device is poorly suited for getting rid of flies in a residential area.
How does ultrasound affect insects?
Insects are arthropod invertebrate animals that have a very hard chitinous cover, which is essentially an external skeleton. Chitin, by the way, in some insects is one and a half times stronger than steel. Under the exoskeleton is living tissue consisting of layers of fat and hemolymph.
The chitinous plates of insects can resonate, they vibrate even under the slightest mechanical influence of external conditions, including acoustic waves, and the gel-like composition of the tissue enhances this effect. Here we should remember the laws of physics, according to which mechanical vibrations are transmitted in liquids at a much higher speed than in other media. For example, the speed of sound in air is a little more than 330 meters per second, and the speed of sound in water reaches 1485 meters per second.
Interestingly, the effect of high-volume sound waves on insects can be compared to the low-frequency shock wave of a subwoofer in a car or a bass guitar at a rock concert, which are not only heard, but physically felt in the stomach.
However, unlike insects, human skin is an excellent sound absorber, and it dampens ultrasound, while chitin resonators, on the contrary, enhance it. The result of such exposure is both painful sensations in arthropods and the failure of certain systems and organs.
The sound spectrum is divided into three areas, in our case it is the red sector
Among other things, ultrasound is perfectly reflected from dense, and especially smooth, surfaces, which include walls, ceilings, floors, wooden or plastic furniture in a room, which implies a continuous, multiply amplified acoustic attack on insects anywhere in the room where there is such type of radiation.
