Our 360° Ultrasonic Pest Repeller is designed with a transducer and dual speakers that emit ultrasonic sound at a frequency of 100Hz-65kHz. It is able to effectively drive squirrels, mice, rats, and most of the other common rodents away from your indoor areas with a range of 3,229 sq. ft. Perfect for use in the kitchen, living room, office, garage, basement, etc. There are four repelling modes provided to choose from according to your different needs. This repeller is human, pet, and environmentally friendly.