Now I understand about having a few good cycles of treated brood come off before wintering. Let me play devil's advocate again here, tho', regarding all that nice honey the bees will be collecting while the strips are in place. This will cram the brood chamber well with stores (a very good thing after all). Come spring when you super (& reverse) much of that will be moved above into supers. So you still end up with honey collected while treating with miticide. Yes/no/maybe? A certain well known professor over at 'the University' has told me that he knows many beekeepers are leaving the strips in even while hives are supered. Spring and again fall. Tsk tsk... Has there been any news that residues have been found in honey? Thanks for the clarification. I can say this: a few years ago I helped a commercial (sortof) beekeeper harvest the crop and then in October we went around to put strips in (actually cow collars, I'm not sure if it was fluvalinate). By that time a great many of the colonies were either decimated (gone!) or severely weakened to the point that there was no way they would survive. A truly pitiful sight. That was his last season with bees. Sounds like there was some interesting discussion at the recent NY meeting.