Scientists have discovered which low-frequency sounds repel mosquitoes

24.01.2017

Mosquitoes always cause a lot of inconvenience - buzzing, endless bites, unpleasant squeaking, this is just a small part of what these creatures bring. Therefore, more and more new means are being developed to combat them every year. Recently, ultrasonic mosquito repellers have become very popular, which can be easily used at home or outdoors. But before using these products, you should carefully study its properties.

• How does ultrasound work on mosquitoes?
• Is ultrasound dangerous for humans?
• Review of ultrasonic indoor repellers
• Review of ultrasonic outdoor repellers
• Review of portable ultrasonic repellers

How does ultrasound work on mosquitoes?

Ultrasound has been used against mosquitoes, as well as against other animals, for a relatively long time. Ultrasonic devices are used to combat dogs, rodents and, of course, various blood-sucking insects. They emit sound waves that only animals and many parasites can detect, but the human ear cannot sense it at all.

Ultrasonic mosquito control is based on the sound waves that ultrasound emits. This high-frequency sound has an irritating effect on the nervous system of mosquitoes. How does an ultrasonic repeller work? Its sound is similar to the squeak that males make. If the female is fertilized, then this sound will scare her away and she will try to stay as far away from him as possible

In order for this device to start working, it must be connected to the mains. A battery-powered repeller is also available for sale. There are portable devices that you can carry in your pocket. Can also be installed at home or outdoors.

When purchasing a mosquito repeller for the street or for the home, it is worth considering its area of ​​distribution. A portable ultrasonic mosquito repeller has a distribution distance of up to 2 meters, and a stationary one from 5 meters.

Which ones are most often used?

Currently, there is a wide range of foreign and domestic products. You can purchase various ultrasonic traps in specialized household stores, supermarkets, or order them through a network of online stores. The cost of the device depends both on the power and range of its operation, and on the manufacturer of the device. The more famous the company, the more expensive the repeller.

The most well-known and frequently purchased devices for getting rid of squeaking and biting insects include:

Mosquito bracelet Gardex Baby

• ZF810A. This is an electrical device based on ultrasound. It comes in the form of a small box. The operating range of the device is up to 20 m². Price – about 400 rubles.
• Ultrasonic. The device comes in the form of a key fob. Its radius of action is 8 m². The price of the repeller is 400 rubles.
• Typhoon LS-200. In appearance, the electrical device resembles a radio. It can operate in several modes, which determine the range of action - from 15 to 40 m². Due to the large radius of effective action, it is often used on verandas, balconies and terraces. However, its cost is much higher - approximately 2000 rubles.
• Weitech wk 0029. The operating area of ​​the device is up to 50 m². It runs on batteries (three of them are required), which allows you to use the device both indoors and outdoors. The cost of Weitech wk 0029–1400 rubles.

Another domestic device included in the rating of the best repellers is Tornado OK1. It imitates the squeak of a flying male mosquito. The moment the female hears this sound, she becomes unable to bite. The device is capable of generating sounds at various frequencies that affect any of the 200 known species of mosquitoes. Thanks to this, the device can also repel midges. Due to these qualities, many believe that this is the best domestic device in this class.

A device with a sound that repels mosquitoes may be shaped like a watch.

Freetime is a portable device shaped like a watch. It can be attached to a strap and put on your wrist, or you can simply attach it to your belt. The watch regulates the sound from mosquitoes, that is, the intensity of radiation. The cost of the device is 1900 rubles.

You can also assemble an electronic repeller with your own hands. The anti-mosquito sound in a home-made device is produced by a multivibrator microcircuit. How to assemble such a device and the results of its testing can be seen in the video at the end of the article.

Is ultrasound dangerous for humans?

Ultrasound in the dose supplied by animal and insect repellers is absolutely safe for humans. The human ear is simply not capable of perceiving or hearing it. We usually hear sound with a frequency ranging from 16 to 20 kHz, but ultrasonic waves are above our threshold of sensitivity. The vibration level of ultrasonic waves is usually almost 70 kHz.

Also, in addition to frequency, sound is measured in decibels. The human body is able to calmly perceive pressure up to 120 dB. While many repellers are rated at 100 dB, so they do not have a dangerous effect on the human body.

Ximeite MT-606E

A small device that can protect a person from blood-sucking insects on the street. Produces ultrasound pulses of the same frequency. The device does not pose a danger to humans, but it performs its functions effectively. There are models with a frequency regulator, which makes the device universal.

The repeller is capable of protecting an area of ​​up to 30 square meters. Using the switch you can get the sounds of a flying dragonfly or ultrasounds. A similar device costs about 790 rubles.

Review of ultrasonic indoor repellers

Before purchasing a high-quality device for exterminating all unpleasant insects from the house, it is worth considering the main features of repellers for the home . This will help you purchase a quality product that is suitable for the whole family.

Home appliances are safe products that can be used by the whole family. Their operation is carried out from the electrical network, so they can be installed in any room - in the bedroom, living room, kitchen.

Stationary repellers for the home include the following models:

1. AR-115. This is a Chinese-made device. Its production involved the use of ultrasonic radiation technology, which has an irritating effect on mosquitoes. In addition, during operation, this device makes a sound similar to the buzzing of dragonflies, which are the ardent enemies of mosquitoes. The repeller is equipped with an indicator that reflects the operation. Power is supplied via an electrical network with a power of 220 V. The distribution area is up to 50 meters.

2. Ultimate 5 in 1. This is a new product among devices that are used to repel insects. The repelling process is based on the use of magnetic resonance, ion and ultrasound technology. Additionally, it comes with a night light. Power is supplied via an electrical network.

3. Tornado OK-01. The working process mechanism is based on the use of a buzzing sound, which imitates the sound of male mosquitoes. Usually, fertilized females, hearing this sound, try to fly away from the source. It is not felt by humans and domestic animals. If desired, you can adjust the sound yourself.

Review of ultrasonic outdoor repellers

Sometimes when traveling to nature or to the country, it becomes necessary to use various means to eliminate blood-sucking insects. Probably many people know how many of these creatures fly outside in the summer, especially in places near water bodies. In this case, an outdoor mosquito repeller will come in handy. Typically these devices are powered by special batteries.

Popular outdoor repellers include the following models:

• Weitech WK0029. This device is made in Belgium. It has a compact size, so you can easily take it with you on the road. The device body is convenient for installation in a tent or outdoors. This is an electronic device. It is possible to adjust the intensity of ultrasonic radiation.

• Protector Freetime. This is a universal device. It can be used at home, for the street, or simply attach a mosquito repeller to your belt. Thanks to its compact size, you can take it with you to the countryside or to the countryside. The area of ​​distribution outdoors is up to 1.5 meters, indoors up to 30 meters.

• Mosquito repeller Cosmos. This device has low power. The radius of wave propagation is only 3-5 meters, no more. It produces a floating sound wave. Can work in three time modes - 4,4 and 8 hours. When working, it imitates the buzzing of a dragonfly.

Komarin-Keychain Magnet

This device is of the same class as the bracelet, but with its help you can clear mosquitoes from a space of up to 8 square meters. The product is equipped with a special strap, with which the repeller can be placed in any convenient place on the human body.

In addition, the device has:

• A switch for 2 operating modes, as a result of which the device generates the sounds of flight of dragonflies and males.
• Built-in battery, the capacity of which is enough for 25 days of continuous operation.
• Built-in LED flashlight that can shine continuously for 10 hours. For this accessory you will have to pay up to 1400 rubles.

Review of portable ultrasonic repellers

Portable devices can be found on sale. They are usually produced in the form of bracelets and keychains.

Popular models include the following devices:

1. Keychain "Typhoon LS-100". The ultrasonic mosquito repellent keychain is a convenient device that can be carried in your pocket or on your belt. It is possible to adjust the sound from low to high levels. Distribution area up to 80 square meters. This device can be powered by batteries or from a 220 V electrical network.
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2. Bracelet "Komarin-Light". The ultrasonic mosquito repellent bracelet is small in size, so it is convenient to carry with you. Distribution radius up to 8 square meters. If desired, the device can be attached to a belt. The work is carried out using special batteries. At home, the work process can be carried out using an electrical network with a power of 220 V.

Fighting mosquitoes is a rather complex process that takes a lot of effort. The use of ultrasonic repellers will make this matter much easier. The main thing is to choose the right device that can completely remove all these unpleasant parasites. In addition, some models will help make outdoor recreation comfortable and carefree.

Features of the influence of sound

Mosquitoes are representatives of a large family and their numbers are huge.
Each type has not only external features, but also internal ones. This is why different mosquitoes have different degrees of perception of sounds. This explains the fact that for some, ultrasound at 6 kHz is already fatal, while for others it will not even cause slight discomfort. There are different opinions regarding the effectiveness of repelling bloodsuckers using ultrasound. Manufacturers claim that the method works flawlessly and offer new developments of special devices, and scientists are trying to find a reasonable explanation for this. As a result, millions of residents buy various repellers and use them to protect themselves from bloodsuckers.

Ultrasonic mosquito repellers

The main advantages of ultrasonic control:

1. Safe for humans. Repellers do not have to be applied to the body, smeared on the skin, or treated with clothing. As a result, the risk of developing allergic reactions and other serious consequences is eliminated.
2. Reusable. Special repellers are powered by mains or batteries, so they will work for a very long time. After this, you just need to replace the battery and continue using the device.
3. A wide range of. Online stores and retail outlets offer a huge variety of ultrasonic repellers. They can have different dimensions, design and functionality, which makes it possible to choose a device to suit your own taste.

On a note!

You can also make your own mosquito repeller. This will require a minimum of skills, a user manual and a small supply of materials that can be found in the house or will cost a penny.

Among the shortcomings are noted:

1. High price. Ultrasonic mosquito repellers are more expensive than the usual cream or spray.
2. Questionable effectiveness. There is no clear opinion regarding the effectiveness of this method of protection. Scientists have not been able to 100% confirm this fact. Also, the degree of efficiency depends on the ability to choose the right frequency.

Ultrasonic devices are also on sale, which have several operating programs and are capable of repelling not only insects, but also small rodents.