Protects up to 300 sq ft. Pesticide and Odor free. Whisper quiet operation. No Zapping or Buzzing. No expensive attractant required. UV fluorescent bulb generates a warm light, attracting insects Ti02 titanium dioxide-coated surface produces CO2 that's irresistible to mosquitoes Powerful, yet whisper-quiet vacuum fan sucks insects into the retaining cage where they dehydrate and die NOTE : For outdoors, use only in a covered, protected area; for example, a garage, screened-in porch or four-seasons room.