STAR Ultra NW Rodent Repeller is an electronic device that uses the principle of intense high frequency sound waves (well above the 20 KHz frequency which is the upper limit of the hearing range of the human ear) to drive away RODENTS. They emit intensive ultrasound that is audible and painful to rodents, but is inaudible and harmless to humans. The
acoustically hostile environment created by the ultrasound makes it undesirable for the rodents to inhabit or cohabit and leads to avoidance behavior. Rodents usually leave the area being protected by ultrasound. They do not get killed.