All living organisms respond to ultrasound. Scientists have found that it destroys some bacteria and viruses. Not so long ago, a new development based on this technology appeared - an electronic pest repeller.

How ultrasound affects insects

Ultrasound is a sound wave with a frequency of more than 20,000 Hz. To understand how it affects insects, one should remember the features of their structure. The body of arthropods is covered with a chitinous shell, which plays the role of a skeleton. Quinine scales resonate under any mechanical action, in particular, under the influence of acoustic waves. And the jelly-like body enhances the effect, which is due to the laws of physics.

Due to the constant vibration of chitinous plates in cockroaches, ants, bedbugs and other insects, the central nervous system is disrupted and irreversible changes occur in the body. They lose the ability to leave offspring, so their population is gradually dwindling.

Important! When using a gadget in the house, the effectiveness increases several times. Sound waves bounce off furniture, walls, floors and ceilings, amplifying vibration in the bodies of uninvited guests.

Advantages and disadvantages

Tornado Ultrasonic Mouse Repeller

An insect repeller is not a panacea. It is not always effective - there are insects that are resistant to ultrasonic exposure. And many manufacturers recommend using the device as an auxiliary tool.

The advantages include:

  • ease of handling;
  • safety for humans, pets and the environment;
  • long working time;
  • profitability;
  • wide range of action;
  • versatility.

Insect repeller

Instrument users note significant disadvantages:

  • overcharge;
  • habituation of pests to constant exposure;
  • lack of results at low temperatures.

Powerful devices negatively affect people. Some gadget owners complain of insomnia and headaches.

Types of insect repellents

Ultrasonic Cockroach Repeller

Devices that repel pests are:

  • stationary - connected to the electrical network;
  • mobile - powered by rechargeable batteries or batteries;
  • mixed - combine the previous types.

Stationary insect repeller

Solar powered models are very rare on sale.

Insect and rodent repellents

The ultrasonic rodent and insect repeller operates at frequencies from 25 to 45 kHz. It is these waves that harm uninvited guests - they depress the central nervous system and brain activity.

However, pest organisms are able to adapt to radiation in a short time and stop responding to it. Therefore, devices must systematically change the frequency, preventing pests from getting used to ultrasound.

Universal emitters

These gadgets are effective against most insects:

  • cockroaches;
  • fleas;
  • spiders;
  • bedbugs;
  • lice, etc.

Repeller universal

They operate at frequencies that are harmful to the specified pests.

Electronic scarers

Electronic scarers are gaining popularity thanks to persistent and sometimes aggressive advertising.Although people leave conflicting reviews about them. The creators are improving technology and believe that ultrasonic devices will soon replace poisons and chemicals as a more economical and safer way to fight.

Anti-mosquito ultrasound

Only females bite people. They need blood for reproduction: it contains the amino acids necessary for the full development of eggs. Males, on the other hand, feed on nectar all their lives, without annoying others.

Ultrasonic Repeller

A device designed to control these insects does not kill them. It emits a sound that repeats the mating squeak of the male. The females cannot stand it and fly away.

On a note! Mosquito repellents are especially effective against bats that mimic the "roll call" of bats.

Ant repellents

Ants are extremely unpleasant guests. It is not easy to take them out in an apartment building. If the neighbors do not take any action, insects will constantly return from the neighboring dwelling.

The ultrasonic ant repeller should be more powerful. But his constant work can negatively affect human health. Universal gadgets are not always effective - these insects are not afraid of weak radiation.

Bed bug repellents

They work on the same principle as other devices - they emit high-frequency waves. They cause panic and stress in insects, thanks to which they leave their homes. But buyers are reporting that gadgets don't always do their job as well as they'd like. Powerful gadgets designed to combat rodents are effective against bedbugs.

Bed bug repellents

Flea, moth and tick repellents are also on sale. They all work according to an identical scheme - they emit waves of a certain frequency, which cause discomfort to pests.

On a note! Flea and tick repellents can help keep cats and dogs safe. Some models are collar-mounted.

Instructions for use

Manufacturers must include instructions for each device. However, they all work in about the same way:

  • the gadget is connected to the mains or batteries are inserted into it;
  • leave on for a certain time.
Ultrasonic bed bug repeller

It takes 1 to 4 weeks to repel pests, depending on the model. This is how much the device should function continuously. In the future, it can be periodically turned on for prevention. High-quality gadgets do not cause inconvenience to a person - they do not make noise, do not smell, do not heat up.

Important! The space in front of the repeller must be left free - ultrasound does not penetrate through walls and furniture, but is reflected from them.

Safety rules and precautions

When operating scarers, the usual recommendations for all household appliances are observed:

  • do not plug into broken or damaged sockets;
  • do not use outside the range of permitted temperatures and at high humidity (exact indicators are indicated in the instructions);
  • do not cover a working gadget with furniture;
  • do not use faulty devices.

There are also few precautions:

  • do not connect ultrasonic insect repellents near the bed;
  • give the device periodic rest, especially if it is overheated;
  • if people or pets feel unwell, turn off the device immediately.

Should not be installed near the bed

Before starting use, do not neglect the study of the instructions. Operating rules change slightly.

Popular models

Now the market is flooded with a variety of scarers. Below are the most popular models.

Pest Reject

Universal repeller of spiders, cockroaches, ants, mosquitoes, rodents.It emits electromagnetic pulses and ultrasound. Range of action - 200 m. Requires connection to the 220V power supply. Cost - from 250 rubles *

Consumers report that over time, cockroaches get used to the radiation and stop responding to it. Therefore, the device is not so effective against them.

Pest Reject

Pest Repeller

Scares away insects and rodents. Equipped with a night light that can be switched off. Frequency - 5-50 Hz. If the pulp is inhabited by guinea pigs and hamsters, the device should be used with extreme caution.

Works from the mains. The radius of action is 70 m². Price - from 350 rubles.

Rexant

Pest repeller - insects and rodents - Rexant with variable radiation frequency. Features:

  • works from the mains;
  • radius of action - 60 m²;
  • adjustment - manual;
  • frequency - 30-70 kHz.

Rexant

Safe for people and animals. Price - from 700 rubles.

"Tornado"

A series of Russian-made stationary devices. They differ in a wide range of operating temperatures: from -40 ° C to +60 ° C. There are devices that can scare away:

  • rats,
  • mice,
  • mosquitoes,
  • cockroaches, etc.

Cost - from 1300 rubles.

"Defender"

Repeller Defender

Universal device for repelling insects and rodents. The affected area is up to 200 m². It is used both in apartments and in private houses. It has 2 emitters - ultrasonic and electromagnetic. Works from the network. Price - from 800 rubles.

Repelling pests with ultrasound is a good and promising technology. Reviews of such devices are contradictory. Some consumers note their effectiveness, others speak of them as completely useless. Most likely, this is due to the huge number of counterfeits that have flooded the market. However, such devices deserve attention.

* Prices are valid for October 2018