And commercial beekeepers are apparently unconcernned about off label treatments (with all the consequences that entails such as resistant Varroa, resistant AFB etc etc) Ruary -----Original Message----- Claude Hachey Stated I can feel much more confident in my decision to dust and the info provided is invaluable. And the point I was trying to make is that commercial beekeeping...managing anywhere from one thousand to ten thousand colonies or more is logistically different than managing a few colonies. ****************************************************** * Full guidelines for BEE-L posting are at: * * http://www.honeybeeworld.com/bee-l/guidelines.htm * ******************************************************