The adopted physical principle, special ultraviolet LED attracts mosquito, and this device encloses the mosquitos inside until death. Use the fan vortex to inhale the mosquito and make it impossible to escape, without any harmless, nontoxic chemical composition, recommended for pregnant women and children. Fight mosquitoes easily! The insecticide works silently (<35 dB) and can offer absolute tranquility. Easy operation and charging with a USB cable; Removable collection tray for hygienic and easy cleaning.