Pest-A-Cator® will effectively rid your home of rodents and roaches without the use of chemicals or traps! Pest-A-Cator’s patented pulse technology emits a silent electromagnetic pulsing signal throughout the wiring of your home to repel unwelcome mice, rats, and roaches without killing them. No fumes, no mess, no traps or poison—and it works through walls, ceilings, and attics! Safe around children, pets (except rodent-like pets) and computers. Unit plugs into any standard 110-Volt indoor wall outlet and protects up to 2,000 sq. ft. Each unit protects one floor. (2½"W x 4"H)