1.How to work: works by ultrasonic wave that can irritate and interfere with the brain and auditory nervous systems to effectively drive away most types of pests and roaches such as fleas, rodents, roaches, mice, insects, mosquitoes, ants, rats, bed bugs, and more<br>2.Easy to use: just plug the electronic pest control ultrasonic repellent into the power sockets.; it will start to repel the pests when the blue light on; recommended to plug the ultrasonic pest control repeller at between 30-50 inches away from the floor for flying pests and 10-30 inches from the ground for crawling pests<br>3.Wide coverage: The ultrasonic pest repellent is effective up to an area of 1600 sq ft.; it's widely used in homes, warehouses, offices, gardens, hotels, etc; since ultrasound can not penetrate through walls and solid objects, it is recommended to put one in each room; as for large storage areas, we suggest installing 2 or more devices<br>4.Quiet and effective: The Ultrasonic Pest Repeller working with low-frequency ultrasound waves, no noise in the room can influence you and your pets;most customers can see the results within 3-4 weeks;if you have any problems, please feel free to contact us; we hope you sleep comfortably and have a pest-free environment<br>5.Less Energy Consumption: no need to clean dead pest, no foul smell and cadavers, no battery required, and save a lot of money 1.How to work: works by ultrasonic wave that can irritate and interfere with the brain and auditory nervous systems to effectively drive away most types of pests and roaches such as fleas, rodents, roaches, mice, insects, mosquitoes, ants, rats, bed bugs, and more 2.Easy to use: just plug the electronic pest control ultrasonic repellent into the power sockets.; it will start to repel the pests when the blue light on; recommended to plug the ultrasonic pest control repeller at between 30-50 inches away from the floor for flying pests and 10-30 inches from the ground for crawling pests 3.Wide coverage: The ultrasonic pest repellent is effective up to an area of 1600 sq ft.; it's widely used in homes, warehouses, offices, gardens, hotels, etc; since ultrasound can not penetrate through walls and solid objects, it is recommended to put one in each room; as for large storage areas, we suggest installing 2 or more devices 4.Quiet and effective: The Ultrasonic Pest Repeller working with low-frequency ultrasound waves, no noise in the room can influence you and your pets; most customers can see the results within 3-4 weeks; if you have any problems, please feel free to contact us; we hope you sleep comfortably and have a pest-free environment 5. Less Energy Consumption: no need to clean dead pest, no foul smell and cadavers, no battery required, and save a lot of money