Sumpol Ultrasonic Pest Repeller R1 HUMANE & NON-TOXIC PEST CONTROL: The Ultrasonic Pest Repeller with Night Light is a humane method of pest control, disturbing and driving the rodents away, but not killing them with harsh or toxic chemicals.Unlike glue traps, mousetraps, poisons or roach motels - all of which kill bugs and leave a messy cleanup,while our Pest Repeller minimizes human contact with mice, rats, or other disease-bearing rodents. LARGE COVERAGE AREA : The Ultrasonic Pest Repellent is effective for an area up to 1600 Square Feet. Please note that ultrasonic waves cannot travel through walls,we suggest using at least 1 device for each room, and at least a couple units for areas where pests problems are serious. SIMPLE TO USE: No need for assemble, no need for the help of insect control technicians, just plug it into the socket and leave it work. Naturally drives pests out without killing them, only creates an uncomfortable environment for pests so they simply leave. It is no need for you to clean up dead insects and pests too. UPGRADED VERSION MICROCHIP: The Pest control ultrasonic repellent is equipped with the most advanced chip to enhance the ultrasound, and it constantly auto-varies frequency between 18.8-70 KHz to attack the nervous system of pests and makes them never become immune to the sound. 60 DAYS GUARANTEE: Ultrasonic spider repellent is backed by our money back guarantee because we want to help you get rid of those pests and we offer a money back guarantee if you dont see results within 4 weeks.