Extend your range of protection with a more powerful UV fluorescent bulb and a light enhancing diffuser. This insect trap is engineered for 3-way protection against mosquitos and other flying insects. First, a UV fluorescent bulb generates a warm light, attracting insects. Then a second lure, an exclusive Ti02 titanium dioxide-coated surface, produces CO2 that’s irresistible to mosquitos. Third, a powerful yet whisper-quiet vacuum fan sucks insects into the retaining cage where they dehydrate and die. A funnel confines flying insects to the retaining cage when the trap is turned off.