The Original PEST OFFENSE is an environmentally safe electronic pest repeller. It is designed to make the space within the walls of your building to pests seeking to nest within the walls. Keep your home free of rodents and pests with the Pest Offense Electronic Pest Repeller. Built with a microprocessor, this electronic pest control creates a force field in your home by sending electronic pulses through the wire. Simply plug the device into a socket. This chemical-free electronic repellent also includes a surge protector and indicator light. Guard your dorm room, apartment or house with the Pest Offense Electronic Pest Repeller. (110V)