Effective Bug Zapper: UVA spectrum of mosquito killer lamp is effective to attract and entrap mosquito and other winged insects, safe to human without emitting harmfuland poisonous substances. The high-voltage power grid will electric shock those insects to death.^ Easy to Clean: Unplug electric mosquito zapper from the wall socket and pull the tray out from the back of the device. Remove the compartment and use the brush to clean off dead insects, then properly restore it to original position.^ Safe Mosquito Killer: This bug zapper is non-chemical, which cannot kill mosquitoes immediately like insecticides, mosquito repellent incense and electronic mosquito trap. It kill mosquitoes in a physical way, which is totally non-toxic, odorless, and radiation-free, so please be patient when using this bug killer.^ Wide Applications: The mosquito zapper is suitable for various indoor and outdoor locations such as living room, bedroom, kitchen, office and meeting room and all the closed spaces. Dont use this fly killer in wet rooms like bathroom, laundry, sauna etc. Due to its size the effective coverage is about 10-15 square meters.^ Better for Darkness and Unmanned Conditions: Please turn off all the lights of the room to provide a dark environment for best effect. Please turn on the mosquito killer 2-3 hours before going to bed. Dont place the mosquito killer lamp anywhere near you, for yourself are more attracted to the mosquitoes than the lamp.^