In a message dated 2/28/03 8:50:48 AM Eastern Standard Time,
[log in to unmask] writes:
> Have you treated twice and had good results, Mats? Did treating
> twice have any bad effects on the bees? How did the colonies treated twice
> winter?
I keep bees just north of the Canadian border in Eastern Ontario. I treat
with Formic acid only in the Spring April/May depending on the temperature.
One application seems to be okay but I now I use Piston in the fall to have
two control that act quite differently and thus reduce or eliminate the
chance of developing resistance in 'my' Varroa.
..george
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