Generic 110v Electronic Mosquito Killer Lamp Insect Zapper Bug Fly Stinger Pest Control No odor and no chemicals, environment protecting. Limited flow, low power expenditure, high efficiency. Ideal for indoor use, especially in bed-room, hall, office, etc. Can eradicate flying insects, mosquitoes, and annoying bugs from your home. Suggested using height is 0.8-1.2meter, and the distance to wall should over 0.3meter.