... , chemicals, or traps, and no effect on humans or non-rodent pets. Just plug this unobtrusive electronic pest control device directly ... , laundry room, etc. (For larger rooms, use two Ultrasonic Pest Repellers, one on each side of the room. ) EPA registered. Noticeable ... protection Ultrasonic pest repeller won't affect people or non-rodent pets Electronic pest control device covers 500 sq. Ft. Easy ...