1. [How it works] This product is for mosquitoes only. USB plug-in. Six UV bulbs emit 368nm wavelength. This wavelength is fatally attractive to insect mosquitoes. Mosquitoes are attracted to the light source and then become trapped in the mosquito tray under a strong cyclone. Powerful cyclones can dehydrate mosquitoes to death. 2. [Super Safe Guarantee] No radiation, no poison, no chemicals, quiet, suitable for baby nursery or adult bedroom, safe for human health and environment. 3. [Anywhere] Powered by USB, so you can connect it with adapter, power bank, computer or any device with USB port. It is very portable and suitable for indoor and outdoor. it can kill mosquitoes or be used for lighting 4. [Easy to Clean]: In order to clean and disinfect the electric mosquito killer, all you have to do is empty the dead tray with mosquitoes. The device can be used indoors.