From reading 100's of posts/papers/studies/etc. I came away with the distinct impression that starting end of July and into August MITE loads are peaking on otherwise untreated bees. This would seem to be the time to Powder/Dowda the girls, Hose 'em with Sucrocide, FGMO a few times in-between the other treatments, Cull Drone, set up the ApiLife Var, Get out the Formic Pads, reach for the Oxalic Pipe. None of that hard chemical Apistan or worse check-mite. No this little nest in regressed for the three middle broodnest frames at 4.8 and still working on the others. Girls are getting fed 1:1 to help with comb building and they're drawing up those empty frames up quick! I can see a mite here of there, but not often. Sticky Board from SBB shows 28 for 24hrs. Take action!.?.!.?!?!?!??!?