This is the decorative CO2 mosquito trap that captures and kills insects without harmful chemicals within half an acre. It emits carbon dioxide (the same gas people expel during respiration) that is generated when ultraviolet rays from the internal fluorescent bulbs react with a titanium dioxide coating inside the trap. The carbon dioxide and warm UV light in this outdoor mosquito trap lures mosquitoes to the trap and an integrated fan traps them in a removable compartment where they die of dehydration. Unlike propane systems that require frequent refills or electrocution traps that release pathogens when an insect is killed, this CO2 mosquito trap uses 3,000-hour rated UV bulbs and does not create harmful biological agents. In addition to mosquitoes, it catches biting flies, house flies, sand flies, blow flies, drain flies, moths, no-see-ums, June beetles, wasps, yellow jackets, stink bugs, gnats, and biting midges. AC Plug. 46 1/2" H x 12 1/2" Diam. with stand. (12 1/2 lbs.)