I want to do an Oxalic vapor mite treatment in November some time and have the option to do quick mite knock downs at other times with honey supers on. Oxalic acid vapor seems to have something to offer and certainly is cheap. I am hearing that it does not taste taint honey or bio accumulate in comb, So , I built a vaporizer. I first built the crack pipe style with copper pipe and fittings that gets heated with a propane torch. It does take some finesse to get the heat just right and it puts the operator in the fume kill zone, so I made one heated with diesel engine glo plugs that you can be fitted right inside the entrance and string wire out to. No original thinking on my part as several people already have them on the market. They are well worth the dollar but I like building gadgets.