Upgraded Ultrasonic Pest Repeller:Using the upgraded ultrasonic and electromagnetic waves.The automatic frequency conversion of our spider repellent for house indoor can reduce the adaptation of pests to frequency.Roach killer indoor infestation repelsinsects by emitting ultrasonic waves of different frequencies to stimulate their nervous system. Keeping bed bugs, spiders, ants, cockroaches and mouse away from your house. Wide Effective Coverage Area: Our mouse traps indoor for home is effective coverage of each pest control is up to 1600 square feet.It's widely used in homes, warehouses, offices, restaurant, supermarket, hospital, granary etc.To get great results,werecommend you to install one for each room because the ultrasound can not penetrate walls and solid objects.Let the mouse repellent protect your home 360degree all around. Easy to Use: All you do is pest repellent ultrasonic plug in an electrical outlet and the ultrasonic pest repeller will start to repel the pests when the blue night light is on.Please make sure to install it vertically 7-31 in away from the floor. Andmake sure there are no barriers like curtains or cabinets covering in front of the repellent. Depending on the environment,most customers can see the results within 2-3 weeks We can say goodbye to pest. Eco-Friendly and Safe for Human & Pets: Our ultrasonic pest repeller plug-ins is environmental and effective.The electronic rodent repellent indoor ultrasonic is safe for human and pets. Ultrasonic sound is inaudible to humans and pets. No needto clean up dead pests, no battery required and cost little electricity.