Nature-friendly, safe for human & pets-bug zappers contain a bug light bulb that emits a bright ultraviolet light and a high powered electric grid that is housed inside a cage to prevent accidental contact. The fly zapper has no chemicals, insecticides, and harmful sprays. It doesn’t release any bad smell, dangerous fumes, or lethal substances into your living environment. Indoor mosquito killer is also relatively quiet, thereby ensuring a good night’s sleep. 1000v can easily kill mosquitoes with only making a little noise. It can be in bedrooms to allow ease of sleep. This bug zapper adopted pure physical way kill flies, it does not have any safety risk to you or the environment. The use of this electric Mosquito killer can also prevent mosquitos from biting and spreading any virus. You will enjoy the health benefits of eliminating dangerous insecticides and asthma-inducing bug sprays from your life. Turn it on three hours before bedtime will have the best effect. It works better in dark areas. Enjoy your days without the annoying bugs, mosquitos, flies, fruit flies, wasp, and other similar pests. Let's Enjoy Life Together!