Note: 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. Also, 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. This mosquito killer is extremely safe and hygiene. No high voltage current and no zapping sounds; eliminates mosquitoes quietly and safely. Safe to use 24/7 and may be used at areas with kids and pets. Features bright UV bulbs which fly find irresistible, and get attracted to the trap; the fan then sucks the flies inside and prevents them from escaping. The life of the UV bulbs is approximately 20000 hours. Perfect for indoors or outdoors. Can be used at home, office, kitchens, restaurants, schools, etc. For residential, commercial, and industrial use. Perfect also for gardens, yards, pool area, etc. Effective for areas of up to 1000 sq. feet! Get rid of all flying insects and bugs without the use of pesticides or dangerous chemicals. Maintenance-free and easy to use mosquito killer and Fly Killer; simply plug in the flytrap and watch your area become free of all pesky and annoying flies.