Attracts and kills mosquitoes and other nuisance flying insects including biting flies, wasps, stink bugs and Asian beetles. Protects up to 300 sq. ft. Whisper quiet operation. Pesticide and odor free. No zapping or buzzing. No expensive attractant or propane required. Easy to set up. A UV fluorescent bulb generates a warm light, attracting insects. Then a second lure produces CO2 (the same gas we emit when we exhale) that attracts the insects. Third, a powerful, yet whisper quiet vacuum fan sucks insects into the retaining cage where they dehydrate and die. A unique twist on/off feature ensures that any insects still alive in the retaining cage won't escape when the trap is turned off. Ideal for travel, RV's, patios, kitchens and porches. For use just about anywhere (use outdoors only in a covered, protected area such as a garage or screened-in-porch.