>
> >Any speculation about what may be affecting the efficacy under
> humid conditions?


Bill, I can't say, since Jennifer has not yet shared her data from either
last season's trial or this season's with me yet.  I'm supposed to receive
it within a week.

Until I get a chance to analyze their data, I can't say whether humidity
had an effect.  I'm currently in Mississippi, and spent the past few days
in New Hampshire and Pennsylvania.    In those high-humidity areas, several
beekeepers who have experimented with OA/gly towels report good results
(but not hard data).

Glycerin is highly hygroscopic, so if anything, I would expect the solution
to be even more effective under conditions of high humidity.

I'll post to the List when I have a chance to review the data.
-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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