> Testing post treatment in some of our club members' hives this September revealed that mite loads were catastrophic, even after a late August treatment. Turns out some nearby apiaries were collapsing under mite pressure, presumably acting both as mite bombs and robbing targets. This points up the importance of area-wide efforts to suppress mite populations and to prevent swarms in spring.
This echoes what we saw, mite levels remained high even with multiple treatments. But the second part, "area-wide efforts," good luck with that.
PLB
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