Does ultrasonic repel snakes? - The Environmental Literacy Council (2025)

The short, decisive answer is: No, ultrasonic devices do not reliably repel snakes. Despite marketing claims, there is very limited scientific evidence to support the effectiveness of these devices. Snakes primarily rely on sensing vibrations and low-frequency sounds, not the high-pitched ultrasonic noises these devices emit. Save your money and explore more proven methods for snake management!

The Science (or Lack Thereof) Behind Ultrasonic Snake Repellents

Ultrasonic snake repellers are typically small, solar-powered or battery-operated devices that emit high-frequency sound waves. The idea is that these sound waves are irritating to snakes, causing them to avoid the area. However, a fundamental understanding of snake biology reveals why this approach is flawed.

Snakes lack external ears and don’t perceive sound in the same way humans or other mammals do. They primarily detect vibrations through their jawbone and inner ear, allowing them to sense low-frequency sounds and ground vibrations. Frequencies above 20kHz are considered ultrasonic, but snakes sense low frequency sounds of less than 1kHz. This makes them highly sensitive to ground tremors caused by approaching predators or potential prey.

Since ultrasonic repellers operate at frequencies far beyond the range of snake hearing, they are essentially silent to these reptiles. Any perceived effect is more likely attributed to chance or other environmental factors, rather than a direct response to the device itself.

Furthermore, the Federal Trade Commission (FTC) has taken action against companies making unsubstantiated claims about the effectiveness of ultrasonic pest control devices. These actions highlight the lack of credible scientific evidence supporting their use.

Effective Alternatives for Snake Management

Instead of relying on unproven ultrasonic devices, focus on preventative measures and habitat modification to discourage snakes from entering your property. Here are some effective strategies:

• Remove Food Sources: Snakes are often attracted to areas where rodents and other prey animals are abundant. Control rodent populations by eliminating food sources such as spilled birdseed, pet food, and unsecured garbage.

• Eliminate Hiding Places: Snakes seek shelter in dark, damp, and secluded areas. Clear away brush piles, wood stacks, rock piles, and overgrown vegetation. Keep your lawn mowed and trim shrubs to reduce hiding spots.

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• Seal Entry Points: Inspect your home’s foundation and exterior walls for cracks and openings. Seal any potential entry points to prevent snakes from entering your home.

• Use Physical Barriers: Install snake-proof fencing around your property or specific areas you want to protect. The fence should be at least 3 feet high and made of a mesh material with openings no larger than 1/4 inch. Bury the bottom of the fence several inches below the ground to prevent snakes from burrowing underneath.

• Consider Natural Repellents: While there is no magic bullet, some people have found success with natural repellents such as sulfur, vinegar, cinnamon, smoke and spice, and foul, bitter, and ammonia-like scents. However, their effectiveness is often limited and may require frequent reapplication.

• Professional Assistance: If you have a persistent snake problem, consider contacting a qualified wildlife removal specialist or pest control professional. They can safely and humanely remove snakes from your property and provide advice on preventing future infestations.

The Importance of Accurate Information

Misleading marketing claims surrounding ultrasonic snake repellers can lead to wasted money and a false sense of security. It is essential to rely on credible scientific information and evidence-based strategies when dealing with snakes. You can find reliable information from organizations like The Environmental Literacy Council at https://enviroliteracy.org/, which promotes environmental education. By understanding snake behavior and employing effective preventative measures, you can create a safer and more snake-free environment.

Frequently Asked Questions (FAQs) about Snake Repellents

Here are 15 frequently asked questions to further clarify the topic of snake repellents and their effectiveness:

1. Are solar-powered snake repellers effective?

Solar-powered snake repellers often combine light and sound vibrations. While vibrations can be detected by snakes, the effectiveness of these devices in consistently repelling snakes is questionable and not supported by robust scientific evidence.

2. Can snakes hear ultrasonic sound?

No. Snakes sense low frequency sounds of less than 1kHz while frequencies above 20kHz are considered ultrasonic.

3. Is there a snake repellent that actually works?

The term “snake repellent” can be misleading. There is no commercially available product that guarantees to repel snakes completely. Management strategies focused on habitat modification and exclusion are more effective.

4. What smells do snakes hate the most?

Snakes are said to dislike strong and disrupting smells like sulfur, vinegar, cinnamon, smoke and spice, and foul, bitter, and ammonia-like scents. However, the effectiveness of these smells as a long-term repellent is limited.

5. What is the best overall snake repellent on the market?

Ortho Snake B Gon Snake Repellent is often mentioned as a popular choice. However, keep in mind that repellents are not a guaranteed solution and should be used in conjunction with other preventative measures.

6. Do ultrasonic pest repellers bother snakes?

Snakes rely on vibrations, not actual noises. What they can hear is not at a pitch that would be considered ultrasonic.

7. What sounds scare snakes away?

Snakes are sensitive to vibrations, so making noise by talking loudly, clapping, or using a walking stick can alert them to your presence and encourage them to move away.

8. Will ultrasonic pest repellers affect snakes?

Snakes have a lower range of hearing (sub-sonic) and would not be able to hear those sounds so it is safe for them.

9. What smell do snakes hate the most?

Snakes hate the smell of ammonia and won’t come near it. Soak rags in ammonia and place them in unsealed plastic bags. Leave the bags where you usually see snakes to keep them away.

10. What is the longest-lasting snake repellent?

Ortho Snake B Gon Snake Repellent Granules is described as long-lasting and rain-resistant, lasting up to 30 days per application.

11. Does stomping keep snakes away?

Stomping one’s feet is relatively ineffective, but it could have the opposite effect – making the snake feel threatened so it is provoked to bite. You are much safer to stay perfectly still and let the snake go on its way.

12. Does clapping keep snakes away?

Snakes instead sense vibrations in the ground.

13. Does vibration get rid of snakes?

If the vibration is loud enough they’ll perceive it as a threat and stay away. It’s this premise that most solar and battery powered snake deterrents are based on.

14. What animal do snakes hate?

Cats are effective deterrents against snakes due to their predatory instincts and agility, as they are skilled at stalking, pouncing, and killing snakes. Guinea fowl have a keen sense of alertness and can consume snakes, emitting loud alarm calls to alert humans and other animals to the presence of snakes.

15. Do coffee grounds repel snakes?

Some people believe that coffee grounds can repel snakes, but the scientific evidence supporting this claim is limited.