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What Sound Frequency Repels Rodents?

Rodents do not like any noise greater than 30 kHz. Sound greater than this intensity will irritate these pesky creatures.

March 7, 2022

3 min read time

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What Sound Frequency Repels Rodents?

Have you ever wondered if there’s a way to keep those pesky rodents away without resorting to traps or chemicals?

You’re in the right place.

Today, we’re exploring the science and effectiveness of using frequency to repel rodents.

Let’s dive in!

Nothing can be more unsettling than finding out your home has been invaded by rodents.

Beyond the immediate ‘yuck’ factor, these critters can pose health risks and damage property.

Safe and non-toxic solutions are the need of the hour, and that’s where frequency-based repelling comes into the picture.

Understanding Rodent Behavior

Before diving into the nitty-gritty of frequencies, it’s crucial to understand our ‘adversaries’. North American homes often encounter rodents like mice, rats, and squirrels.

Their keen senses, especially hearing, make them sensitive to certain sounds that we humans might not even notice.

The Science of Sound Waves

Think of sound waves as ripples in a pond.

These waves have different characteristics like frequencyamplitude, and wavelength.

While we might enjoy a range of sounds, from the soft notes of a flute to the deep beats of a drum, rodents perceive sound differently, especially those at ultrasonic levels.

Ultrasonic Pest Repellers: Do They Work?

These devices emit ultrasonic sound waves that are typically beyond our range of hearing but can be unsettling for rodents.

The science suggests that these high-frequency sounds can interfere with their communication and navigation.

However, it’s not a one-size-fits-all solution.

The effectiveness can vary based on the type of rodent and the specific frequency used.

The Optimal Frequencies to Repel Rodents

Research shows that frequencies between 20 kHz to 65 kHz can be effective.

However, different species might have varied reactions.

For example, while a frequency might agitate a mouse, it might be less effective on a squirrel.

Safety Considerations

Using sound to repel rodents sounds great, but what about our furry friends at home?

The good news is, most household pets like dogs and cats aren’t disturbed by these ultrasonic frequencies.

However, it’s always best to monitor your pets and ensure the frequency isn’t causing them any distress.


The world of pest control is evolving, and frequency-based repelling offers a promising, non-toxic avenue.

While it might not be the magic bullet, combining it with other methods can create a robust defense against these unwelcome guests.

FAQs (Frequently Asked Questions)

Do ultrasonic devices affect birds?

Most birds aren’t affected by the ultrasonic frequencies used to repel rodents.

However, it’s always a good practice to observe and ensure no wildlife is being inadvertently disturbed.

How long do these devices take to show results?

Some homeowners notice a difference within a week, while for others, it might take a bit longer. Consistency and proper placement of devices are key.

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