Bill H, the math is straightforward for a colony with zero sealed brood.
30,000 bees X 1 mite/300 bees = 100 phoretic mites. If you got 100% kill,
you'd see 100 mites on the stickyboard.
> I only do OAV with the wand and have had zero winter kill for OAV
treated hives for two years (when I started).
Bill T--could you please tell us the n's--as I'm curious about your high
winter survival rate in your cold-winter environment. How many hives were
involved?
--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com
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