Dick Marron wrote: >My friend from Germany wants to know why we are still talking about liquid treatments with O/A when it is so easy to sublimate. (vaporize from a powder) with a little heat. > > There are vaporizers for sale on the net and also some home grown DIY contraptions of pipes and such. If I were a large operation, I would definitely go the vaporizer route, in spite of its additional hazards (dealing with a corrosive vapor). But a hobby beekeeper can get by just fine with the drip method. All I have seen shows the same effectiveness for both methods. Bill Truesdell Bath, Maine :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::