LED Mosquito Trapper Electric Mosquito Killer Indoor Bug Zappers UV light purple beads attractive to mosquitoes, mosquito control using innovative technology, wavelength control in 360mm-400mm, this wavelength have a fatal attraction for mosquitoes, and harmless to human body. No dangerous chemicals or sprays that can harm babies, kids, pets or people, easy to clean. Eco-Friendly choice of mosquito control. Smoke & Insecticide free Mosquito Trapper that doubles as Air Purifier. Care:Put on uppper places is more effective to attract flies.Do not put besides the bed so that we will not be shined by the light. It is better to put in the drak room 2 hours before sleeping since the carbon dioxide we breathe out will have an influence on the lamp to attract flies.