This repeller should be installed at 130~150 centimeter away from the floor, and should be vertical to the floor and plug to the power socket.

• Keeping Pests and Insects Away from Your Home: Pest Repeller uses the most advanced ultrasonic technology to get rid of pests; Sound wave is so low frequency that it's inaudible to humans and pets. No Pests are immune to and leave your home after weeks.
• Easy To Use: It fits well and the electronic design make it that you just plug it in any standard household socket and it will work automatically.

Keeping Pests and Insects Away from Your Home: Pest Repeller uses the most advanced ultrasonic technology to get rid of pests; Sound wave is so low frequency that it's inaudible to humans and pets. No Pests are immune to and leave your home after weeks.