100% SAFE AND EASY TO USE: The Bell & Howell pest repeller is 100% safe! It contains no harmful chemicals and is odor free! You will no longer need any mouse traps or other messy tactics generally used to get rid of pests. ERADICATE ALL TYPES OF PEST AND RODENTS FROM YOUR HOME: The Bell & Howell pest repeller helps eradicate all types of pest and rodents like mice; rats, spiders, ants, and roaches. This will shield your home from unwanted mammals, making your home or office a more environmentally friendly place without causing anybody to feel uncomfortable HOW IT WORKS: The Bell & Howell Ultrasonic Pest Repeller features a mix of highly-effective ultrasonic frequencies, being extremely irritating to rodents and insects thus causing them to scramble to find a peaceful area, and will be forced to leave your home. The variable technology frequency waves ensure that pests do not get immune to the sounds. With these sounds not letting up rodents and insects will want to leave your home. Helps repel mice rats spiders ants roaches Includes LED indicator light to let you know waves are working