A mosquito magnet is a kind of mosquito trap that aims to kill all mosquitoes by setting up a fake mammal for the mosquitoes to be attracted to and then vacuums them up. Mosquito magnets produce warmth, carbon dioxide, plant chemicals or sweat chemical to attract mosquitoes. These traps attract mosquitoes with a combination of carbon dioxide (some traps use propane) and octenol (another chemical attractant). Mosquito magnet-type traps can be extremely effective if they are put in the right place, set up properly and tuned to attract the species of mosquitoes that live in your area.