Ultrasonic Pest Repeller, Generic Ultrasonic Pest Repeller Indoor Electronic Pest Control Device for Rodents, Mice, Rats, Mosquitoes, Cockroaches, Spiders, Ants, Bugs This ultrasonic pest repeller will have great effect in 50-80 square meters in the room. This pest repeller ultrasonic can lustrate house, black beetle, flea, fly, cricket, ant, wood ant etc vermin. The pest repeller ultrasonic that sent out from this machine is far away from hearing range of human being. This ultrasonic will not do harm to human being and pets. Also will not have affect on house machine. This pest repeller ultrasonic is safety and environment protected. It is smell-less and flavorless. Teeny used energy. Lifetime Guarantee: Customer satisfaction is the most important thing we care about. Our customers trust us and that's what makes us unique. We will provide lifetime warranty on this ultrasonic pest repeller.