1. Latest Ultrasonic TechnologyCombines 22kHz 65kHz frequency conversion technology with 3D surround dual speakers to disrupt the pest's nervous system. Influences on the auditory and nervous system of pests such as mice, rats, spiders, ants, bugs, cockroaches, mosquitoes, fruit flies, flea, crickets, insects and rodents through unique ultrasonic waves. They will escape spontaneously from the area that the ultrasonic covered. 2. Just plug the electronic pest control ultrasonic repellent in power sockets; it will start to scare the pests when the blue light is on. No noise, no smell, and can emit ultrasonic waves that cannot be heard by humans or animals. Ultrasonic pest control can effectively drive pests out of the house without killing them. The electronic pest repeller will not affect your home life at all. 3. Ultrasonic Pest Repeller just plug the electronic pest control ultrasonic repellent in power sockets. Please make sure to install it vertically 7 31 in away from the floor. And make sure there are no barriers like curtains or cabinets covering in front of the repellent. Most customers can see the results within 2 3 weeks. Then we can say goodbye to Vermin! 4. Coverage AreaThe maximum coverage of our ultrasonic pest repeller is up to 1200 square meters. Due to the solid walls that will weaken the effect of the ultrasonic wave, we suggest using 1 unit per averagesized room with a pest problem. Additional units will be required in larger areas. Suitable for living room, bedroom, kitchen, store, house, warehouse, garage home, apartment, shed, tenants, and more.