The Mosquito Magnet Liberty Plus creates carbon dioxide by catalytically converting propane from a standard, readily available, 20-lb propane tank (not included). The Mosquito Magnet Liberty Plus generates its own electricity allowing it to be located near the mosquitoes breeding areas on your property, trapping the mosquitoes at their source before they get to you, no power cord needed. The mosquitoes are drawn away from you and to the Mosquito Magnet. The Mosquito Magnet mimics a large mammal by emitting a plume of carbon dioxide, heat and moisture, which when combined with an additional attractant, Octenol, is irresistible to mosquitoes, no-see-ums, biting midges, black flies, sand flies and more. Another great feature is that it operates all long to prevent mosquito's from planning an attack on your yard. Specifications