>
> >One has to wonder why the difference in P-MIB due to screened floors.
>

This one sure does!  Guessing that humidity is involved.  Varroa appear to
be rather dessication sensitive.

Re brood to bottom, in spring weather, over screened bottoms, my colonies,
if accidentally crowded in a single, will not only rear brood to the bottom,
but will fill the space between the screen and the frame bottom bars with
drone brood.

Randy Oliver

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