> Some scientists think that the Apistan manufacturer made a mistake:
> instead of using 14x2=28 days, they must have calculated 21 days
> (eggs to adult for workers) and used two brood cycles (21x2=42 days,
> recommended time for Apistan to stay in the hive).
Good point. Also 14x3=42. Seems like overkill, doesn't it? Engineers
always figure the breaking point, then build in a margin of safety. Maybe
that was done here?
I guess that studying the drop info over the entire time is the only way to
know for sure.
allen
A Beekeeper's Diary: http://www.honeybeeworld.com/diary/
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