Yard Fogger.BenzOmatic. Uses propane to propel fog.Works great.

NOTE:WILL NOT SHIP WITH PROPANE-Device only. Place the insect repellant in the holder, and use a propane cylinder to push out the fog. Works great. Choose your own repellant such as pet/wildlife safe.Better than Yard Guard-one perimeter spray lasts days of mosquito/black fly free time outdoors.