Why can I hear ultrasonic pest repeller?

Why can I hear ultrasonic pest repeller?

Ultrasonic sound waves have a frequency higher than what human ears can hear, but invading species can detect them. The sound is meant to irritate pesky critters and prevent them from making homes near the source of the noise.

Can ultrasonic devices affect humans?

A group of scientists from the Acoustical Society of America conducted a study about the effects of exposure to an ultrasonic rodent repellent device. The result was unanimous: on average, the sound produced by an ultrasonic device did not bring any significant adverse effects or reactions in humans.

Can ultrasonic sound hurt humans?

Auditory effects are the most thoroughly studied, and include noise-induced hearing loss and temporary or permanent hearing threshold shift. Physiological risks at very high sound pressure levels include heating of the skin and other body tissues, and cavitation in blood vessels and fluid-filled organs.

Does Riddex really work?

They do not work for any kind of bugs. However I have lived in several places with infestations of mice and other rodents. It does seem to work for repelling those. I have been using these riddex plugins for the last 10 years and they have been a lifesaver.

Does Riddex plug in really work?

This is a product you just plug in to the wall and let it do its own thing, but you do have to wait to actually see results. The company says that Riddex takes anywhere between two to four weeks to show full strength and effectiveness, but most customers that buy it and find it to work say that they began to see results within two or three days of usage.

Where to buy Riddex pest control?

– You can also able to see because of night light function. – Harmless and very efficient compared to chemical spray at home. – There is no other electrical failure in the system. – Riddex is available for everyone at an affordable price. – Safe for people and no chance of having a mess at home. – It offers a 60-day money back guarantee for customer satisfaction.

Where to buy Riddex?

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  • REPEL MICE&RATS: If you need quick and easy rodent defense for your home,try a Riddex Plus Pest Repeller!
  • CONTROL ROACHES&RODENTS: This convenient tool is also an excellent way to get rid of bugs.
  • ELECTROMAGNETIC WAVES: This high-tech pest defender uses deterrents to keep vermin and insects away.