The electronic indoor pest control system is simple to use and safe around family, dog, cat and kid. As you could see ultrasonic waves can’t penetrate through walls. Though our unit works great, we still recommend installing Sonic Repellent in each room ! Proven efficient on mices, cockroaches, mosquitoes, spiders, bugs, wasps, bedbug, wasp, silverfish, ants and most of the home pests. Repel pests and lights up your path. Great for a nightstand in your children’s bedroom. (nightlight can be turned off) Just plug in the MaxMoxie Ultrasonic pest repeller and it will start to emit different frequencies to protect your home(Living room, Bedroom, Kitchen, Garage, Attic) from pests. 1 unit only for a standard room It's normal that the pests will increase at the beginning days because they are getting away from their living place after the attack of the ultrasonic. Reduction in pest activity should occur within 2-3 Weeks. If you'd love to experience a truly pests free home - a home free from scurrying, buzzing, and the craziness of rodents running over you, Order It Now!