Basic Vaporizer for treating your hives with oxalic acid power.  Simply add the powder to the canister, close the lid, connect to a small car battery, and turn on.  Seal off all openings and drill a hole in the box to insert the nozzle.  Turn on and wait to heat up and vaporize.  Remove manualy after the alloted time.   Perfect for hobbyist and smaller operations and affordable!