Weitech 0180-B 1000-Sq. Ft. Plug In Pest Repeller Repels mice and insects with ultrasonic sound waves Useful for controlling rodents, spiders, fleas, cockroaches, crickets Plugs directly into wall socket; covers up to 1,000 square feet Won't harm pets and children Rugged plastic case; 5-1/4 by 3 by 1-1/4 inches