PEST CHASER RODENT 3PKThe Victor PestChaser Rodent Repeller emits ultrasonic frequencies that send mice and rats scurrying. The device uses varying frequencies to prevent rodents from getting used to the noise and to keep them from returning. While the high frequency noise is loud to rodents it is safe for use around people and non rodent pets when used as directed. Its also easy to use all you have to do is plug it into a wall outlet and let the repellent do the work for