Keep your home, apartment, or office free from rodents and bugs with this convenient 360-degree repeller. This device uses ultrasonic waves and flashing lights to ward off mice, rats, squirrels, chipmunks, and spiders for up to 1930 sq ft. Designed for indoor use only, this mouse repellent ultrasonic plug in for mice and rodents features a convenient, compact size and can be used in closets, attics, and basements. Simply plug the unit into a standard electric outlet, choose from 4 operating modes, and press the button on the back to activate the flashing LED lights.