>...August...  Caging queens during this period  (14 days--followed by a quick feed (substitute & sugar soln) is showing promise in disrupting that rapid rise in mite numbers...

Do you cage queens in shipping style cages or do you use larger cages that push into the comb and allow egg laying over a small area?  If a queen could be caged for 21 days to allow the last bee to emerge, you could also treat with oxalic in August.  You bee numbers might not be up to par for the goldenrod flow though...

Waldemar

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