ASPECTEK Electronic Bug Zapper 40W, Insect Fly Killer - Powerful Mosquito Zapper, Moth Trap - Indoor Use - Zapper with mesh screen : A mesh screen keep you and your family comfortable, preventing accidental contact with the electrical grid. - Nature: Insects are attracted and easily killed by the insect zapper high voltage metal grids, insect zapper keeping your home nature - SIMPLE INSTALLATION: Hang the electronic indoor insect killer by attaching the accompanying chain to the hooks on the top of the unit, or simply place on a solid surface. - EASY UPKEEP: The removable plastic tray at the bottom of the unit collects dead insects, and is washable to make maintenance fast and simple. The electric grid is self-cleaning.