EFFECTIVE & POWERFUL – This mosquito killer trap features a series of photocatalyst lights which mosquitoes find irresistible, and get attracted to the trap; the fan then sucks the mosquitoes inside and prevents them from escaping. Turn on the machine 2-3 hours before you go to sleep and keep the room dark and close all the doors. For the trap to work effectively it should be placed far away from the fan and the room should be kept as dark as possible.\nNO CHEMICALS, NO PESTICIDES & ODOR FREE – Get rid of all flying insects and bugs without the use of pesticides or dangerous chemicals. Maintenance free and easy to use mosquito killer; simply plug in the mosquito trap into USB and watch your area become free of all pesky and annoying mosquitoes. Do not open the bottom tray immediately in the morning because the mosquitoes trapped inside the tray may fly out. Keep it running for 2 more hours so that the mosquitoes suffocate to death\nQUIET OPERATION & SAFE – This mosquito killer is extremely safe and hygiene. No high-voltage electric and no zapping sounds; eliminates mosquitoes quietly and safely. Safe to use 24/7 and may be used at areas with kids and pets. The life of the lights is over 20,000 hours.\nPerfect for indoors .Can be used at home, office, kitchens, restaurants, schools, etc. Effective for areas of up to 400 sq. feet! Please us it for 3-5 days continuesly for the first time (without opening bottom tray) for best results.\nEASY TO CLEAN - This mosquito killer is simple to clean; dead flies get trapped in a neat hidden tray located at the bottom of the device. To clean, simply remove the tray and wash with warm water; let it air-dry and it’s ready for its next fly catching session. Simple, effective and clean. Please read product description below for best results