Effectively eliminate most flying insects: mosquito, Aedes, gnats, midges, flies, horse flies, fruit flies, house flies, moths, wasps, etc. Please use this exterminator at night and in the dark. EPA registered: The bulb light attracts flying insects, and the high-voltage electric grid zaps them on contact. Efficient physical mosquito control. So you don't have to put up with the smell of sprays, insecticides and attractants. You also don't have to worry about your pets eating insects that have been killed by pesticides.