On Wed, Jul 27, 2016 at 6:51 PM, randy oliver <[log in to unmask]> wrote
>
>
> My question: has anyone else ever heard of bee kill from fume boards in
> hot weather?

Hi Randy,
  Sorry about your hair.
  Here in Colorado everything "fumes off" faster than in the lowlands
(including formic acid) and our sun is pretty strong.  We don't often get
100F days, but mid to high 90s with blazing sun is common when pulling
honey.  If the fume boards are overloaded or not vented enough (twisted or
offset by 3/4 in.), the first couple of hives get a big hit.  There may be
as many as 100 very dopey, drunken bees, sometimes not even able to leave
the super.  I imagine that they don't all recover to say the least.  I
haven't noticed them appearing at the entrance, but our yards are small and
we're usually gone pretty fast.  I know as soon as I pull the fume board
what to expect because the fumes knock me flat and the smell is a little
different, almost aldehyde-like.   Our fume boards are about 2" deep.   And
this is for butyric.  I haven't used benzaldehyde much as it makes me so
hungry I can't concentrate.
Cheers,
Kristina Williams
Boulder, CO

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