While rats and mice are easily frightened by strange or unfamiliar noises, they adjust to repeated sounds. This means frightening devices that use high frequency and ultrasonic sounds will be ineffective at repelling these rodents from your home or garden.

What sound frequency do rats hate?

20 Kilo Hz is the sound most rats emit under stress or when they feel unhappy. Also, high-frequency sound tends to frighten them more. However, remember that rats also adjust soon to a repeated sound.

Are rats sensitive to sound?

Hearing Range

Rats hear all noises between 200 hertz and 80 or 90 kilohertz. Rats use their sensitive hearing to communicate with their young, mates and others in their community, as well as to locate food sources. Their vocalizations generally fall in the range between 20 and 50 kilohertz.