This trap attracts and kills mosquitoes across a half-acre without harmful chemicals. The trap emits odorless carbon dioxide (the same gas people expel during respiration), light, and collects rain water to lure mosquitoes. Carbon dioxide is generated when ultraviolet rays from the internal fluorescent bulbs react with a titanium dioxide coating inside the trap. When the mosquitoes are drawn inside the device, an integrated fan traps the insects and sends them to 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 superior model uses 3,000-hour rated UV bulbs and does not create biological agents. Sets up on the included stand. Plugs into AC with 10' cord. 44" H x 13 1/2" Diam. (15 lbs.)