Raphycool Ultrasonic Pest Repellent with Blue Night Light, Electronic Pest Insect Control for Mice, Rodents, Ants, Cockroaches, Spiders Intelligent Frequency Conversion with Dual Wave Bands- Effectively repels such nasty insects as mosquitoes, roaches, spiders, crickets, rats with intelligent combination of ultrasonic and electromagnetic waves covering area up to 2000 Sq.Ft. After the pest control is turned on, press on the button for five seconds to reach 1st wave band: 25-70KHZ (to repel rats, mosquitoes, cockroaches); the other five seconds press for 2nd Wave Band: 10-70KHZ (to repel Spiders). Eco-Friendly Physical Insect Control Principle- No more mouse traps, glue and sticky traps, chemical sprays and poisonous baits which might have negative effect on human body. Importantly it is inaudible to human and pets. Plug this indoor repeller into the socket and and let the ultrasonic do the rest job! Keep your home and public place clean and sanitized. Safe Material & Performs Stably- ABS flameresistantouter shell free you from security worry. Adopting US mater chip, the insect repellent could performs stably even for weeks with excellent anti-interference function. Importantly, it is power-saving with 3W rated power. ErgonomicUltrasonic Horn Design- Emitting deep penetrating ultrasonic waves. It also features a soothing blue LED night light with on/off switch. Compact as it is, this insects eliminator could be wildly applied in every room, basement, gallery, garages and large storage and ect. Money Back Guarantee- If there is no noticeable results after the electronic pest control is continuously plugged on for 4 weeks, you will be refunded for sure. ( Typical results can take 2-4 weeks depending on the severity of the pests infestation.)