Woodstream MM3000, Mosquito Magnet Liberty, Residential Biting Insect Abatement System, For Eliminating Mosquitoes, Black Flies, Sand Flies, Is Designed For The Homeowner Who Needs To Protect Up To 1 Acre Area, The Liberty Uses The Patented Counterflow Technology That Emits A Plume Of CO2, Heat & Moisture While Simultaneously Vacuuming The Biting Insects Into A Net Where They Dehydrate & Die, A 50' 12V Power Cord Is Supplied With The Unit, 20 LB Propane Tank Is Needed For Conversion To Carbon Dioxide, Tank Not Included, Safe For Children & Pets While Still Allowing Placement Near The Mosquitoes Breeding & Resting Areas, Heavy Duty Plastics & Marine Grade Metals Make It Ideal For Any Harsh Environments, The Mosquito Magnet Liberty Is Quiet, Environmentally Safe & Uses No Pesticides, Requires CO2 Cartridge, Ron's #404-676 For Proper Maintenance.