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How Ultrasonic Pest Repellers Work?

Going online, there's a debate going on throughout the digital world about the usefulness and effectiveness of ultrasonic pest repellers. Do they really work? Do you repel pests like rats, mice, insects, and other unwanted creatures? The answer is a little vague, they work "most of the time".

Not a definitive answer to an important question for a lot of people. The reason it is not definitive is that there has been very little scientific research on the devices and the little that has been done is inconclusive. That leaves us with personal opinion and testimony.

Before we talk about that lets take a look at the different types of ultrasonic pest repeller out on the market. Some of them claim to use electromagnetic technology. One market brand says the "unit actually changes the normal field around your wiring, creating an environment that pests just can't tolerate." Do you really want to be exposed to EMF from another source?

But that's not the case with ultrasonic pest repellers. The science behind these devices says that  "ultrasonic sound waves attack the auditory and nervous systems of most common pests causing them pain and discomfort.

Back to the question at hand, do they work? Most people will say "yes", they do work for them. Naturally, some say they do not work. However, from our research, the feedback is mostly positive. The other very important evidence we point to is the popularity of ultrasonic pest repellers. Millions have been sold worldwide and millions more every year. Logic concludes that if they didn't work, sales would be plummeting. The consumer will usually decide how good a product is and in this case they must work pretty well. Compared to the cost (both financial, safety, and time) of chemical treatment, ultrasonic pest repeller may be worth a try.

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Are you annoyed by mosquitoes and vermin on hot days, mice and other vermin in winter, but do not want to use chemicals or poison? Then a modern ultrasonic pest controller could be the right choice for you. Find out now how this device works in the interior, in the basement, or outdoors while keeping pests away.

In this article, you will discover:

  • With an ultrasonic insect repeller, different vermin can be kept away without traps, poison, or chemicals. Mammals such as mice and rats as well as insects such as ants or cockroaches will not bother you in the house or outside.
  • There are battery-powered ultrasonic pest controllers that can be used just about anywhere. Other ultrasonic pest fighters against mice and insects can be permanently connected to a power source via the socket.
  • The human ear does not perceive the ultrasonic waves of the devices, whereas vermin feels very annoyed by them and stays away. Therefore, an ultrasonic pest killer will not affect your health but will drive away annoying pests after around two weeks.

In summer mosquitoes and other insects such as ants are annoying both outside on the terrace and indoors, where the pests get through doors and windows. In winter, rodents like mice or rats look for a warm place to hibernate, which very few people want in their basement or pantry. If you don't want to kill the often useful insects and mammals with traps and poison, you can keep them away from home and garden with modern technologies.

What is an Ultrasonic Pest Repeller?

In the first step, we would like to introduce you to how an ultrasonic pest repeller can keep mosquitoes out of the bedroom or how it drives mice out of the basement. An ultrasound pest controller using sound waves first needs the energy to generate the ultrasound. The ultrasonic insect repellants obtain power from batteries or through a fixed connection to the socket.

In the high-frequency range of ultrasound, acoustic waves are emitted in the low-frequency range. The human ear does not perceive them, but insects and rodents feel very annoyed by them. With ultrasound pest control, you can do the same thing as the pests do to you - you disturb the animals until they voluntarily clear the field. Since both various insects and rodents are only annoying in our modern world but play an important role in nature and the environment, you can easily keep the following animals alive in a different environment. 

The great advantage of ultrasonic pest control against mosquitoes and other pests is that they do not kill animals with traps or poison. Therefore, you do not harm the animals themselves or the environment. In the garden, in addition to the pests, the beneficial insects suffer from the application of poison.

An ultrasonic pest killer does not affect the health of the animals. Imagine its working principle when a big, noisy, and annoying carnival suddenly sets up in your home. You too were taking your children and moving!

What are the different types of ultrasonic pest controllers?

If you want to buy an ultrasonic pest control device, you can choose the right one between different categories. In some cases, ultrasonic pest repellents only fight insects or only rodents, with many devices pestering both species at the same time. Also, ultrasonic pest repellers can be powered by plugging into electric supply or by batteries.

Tip: Before using an ultrasonic pest killer, all traps with bait or attractants should always be removed. Because it is precisely these that attract the pests again and again, which you want to prevent.

Ultrasonic pest control: Which criteria should you consider when choosing?

We want to introduce you to important criteria that will help you to find the best ultrasonic pest killer for your home. Here are the questions you should ask yourself when choosing a new device:

Are there ultrasonic pest controllers that are equally suitable for indoor and outdoor use?

In the home, the devices are usually designed in such a way that they can be plugged into a socket in the affected room. The frequency range in kHz is between 22 and 65 kHz, which is ideal for repelling insects and small rodents. Humans and many domestic animals, on the other hand, are not harassed at all or, in the case of mammals, only little.

Such ultrasonic pest controllers should consume as little electricity as possible and ideally use an LED display to indicate that they need to be replaced. Motion detectors are superfluous in the apartment and would not be triggered if small insects were to be driven away. If rodents sit in the wall, they should be exposed to sound from both sides if possible.

Ultrasonic pest control for the outside area, on the other hand, can use an efficient motion detector to specifically disturb when something is going on outside. Otherwise the necessary batteries would discharge very quickly, so that there would be no displacement effect. 

When and how long is an ultrasonic pest controller effective?

How long the effectiveness of the ultrasonic pest killer depends on a variety of factors. Either the device is active until the batteries are empty or until some pests have got used to it. Depending on the species, the frequency also has an influence on how long a fight lasts effectively. Select frequencies between 50 and 65 kHz against insects so that the ultrasonic pest controller will notice them.

Often buyers also ask themselves how effectively after how many weeks the vermin will be driven away. It is essential that you persevere with the use of the ultrasonic pest controller for 14 days so that it can also develop an effect. With different devices for indoor and outdoor use, these two weeks is the proven limit before a permanent effect sets in.

Should I make a break between using an ultrasonic pest controller?

Once you have determined that the acute infestation has passed, remove the device or switch it off. 

With which frequencies are different pests distributed?

For effective pest control with an ultrasonic device, it is necessary to deal with the pest's sensitivity. The following frequencies in kHz are recommended for outdoor areas and different animal species:

Insects: 50 to 65 kHz

Birds, rodents, bats: 24.5 to 45.5 kHz

Cats, badgers, skunks, raccoons: 19.5 to 24.5 kHz

Martens, foxes, dogs: 13.5 to 19.5 kHz

In the case of rodents and mammals, you have to take into account the higher intelligence of the animals. If, for example, there are excellent retreat and breeding opportunities in your garden and in the neighboring gardens as well as a permanent supply of food, mammals will sometimes come to terms with the background noise.  

Does an ultrasonic pest repeller affect pets?

Sensitive pets such as dogs and cats with fine hearing are rarely disturbed by devices for indoor use, which is why they are harmless for dogs and cats.  


When used against insects, ultrasonic pest repellers are effective if used properly.

Julia Gabriel