Mouse, rat, and insect infestations are frustrating and force many families to turn to messy poisons or traps. This plug-in pest repeller uses a combination of ultrasonic sound waves and electromagnetic pulses to give you the peace of mind of keeping out unwanted pests while ensuring the safety of your children and pets. The convenient unit plugs directly into your wall socket and emits ultrasonic siren bursts at a frequency that causes discomfort to rodents like rats, mice, and squirrels but is inaudible to humans and pets. At the same time, the unit sends out pulses that modulate the electromagnetic field produced by your home's power supply to create an uncomfortable environment for pests trying to nest or hide inside your drawers, cupboards, walls, and ceilings. One unit can protect up to 2500 sq ft (230 sq m). For best results it is recommended to use one device per floor. Features: Humane and Hygienic Pest Control: Innovative combination of electromagnetic interference and ultras