Viatek's team has been manufacturing electronic rodent, rat, and pest repellers since 1993. Using one of the industry's widest ranges of ultrasonic frequency, the Plug-in Ultrasonic Pest Repeller uses ultrasonic frequency sound waves to create an unpleasant environment for rodents and arthropod pests like fleas and cockroaches. It emits an alternating ultrasonic sound that ranges in higher and lower frequencies, which allows it to target different pests. The constantly changing environment will cause pests to leave the area. It couldn’t be any easier, just plug it into the wall and it will get the job done.