Ultrasonic pest repellents seem to work on a variety of different pests. Most ultrasonic repellers are safe for household pets such as dogs and cats which aren't affected by the ultrasonic sounds that the device emits. However, the sound can distress domesticated rodents such as rabbits and hamsters.

Permethrin is the most common active ingredient in insecticides applied by licensed exterminators. It is one of a large class of chemical insecticides known as pyrethroids. They mimic pyrethrins, which are botanical insecticides typically derived from Australian and African chrysanthemum flower varieties.

Ultrasonic electronic pest and insect repellent Devices Claim That Their High Frequency Sound Waves Are Intolerable To Rodents And Insects. However, Simply Plugging In One Of These Devices Probably Won't End Your pest woes. It's Important To Understand Exactly What These Devices Can do before Investing In One.