Koolatron Pestcontro Ultrasonic with Floor Light This pest control device combines ultrasonic and electromagnetic technologies into a single unit for repelling pests. Inaudible to people, cats, dogs and birds, the ultrasonic sounds within the hearing ranges of pests drive them away. A convenient built-in night-light offers visibility at night. Covers up to 2,500 sq. ft. Ideal for use in single-floor homes Repels rodent pests continuously while plugged in Inaudible to people, cats, dogs and birds Built-in floor light serves as a convenient night-light Plugs directly into a wall outlet for easy setup.