> Therefore,
> we worked hard to convince our regulators to grant Apivar an emergency
> registration. As soon as Apivar registered in late fall 2008. Beekeepers
> used it to salvage what can be salvaged of bee colonies. Beekeepers who
> used Apivar on time to protect winter bees reported <15% winter kill. As
> we kept monitoring colonies, We found colonies treated with Apivar have
> mites less than 1%.

Amitraz  (Apivar) seems to be the miticide of choice for
non-registered use by US commercial beekeepers and it works very well.
My guess is, with all the various concentrations used by
brew-it-yourself beekeepers, the time from registered (in the US)
introduction to resistance will be much shorter than apistan, but
maybe not as short as checkmite. As Pogo as said, "we have met the
enemy and he is us".

Would be nice anyway, to have it registered in the US. And, no, I do
not use it. I did shift from oxalic to Apiguard.

Bill Truesdell
Bath, Maine

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