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Date: | Thu, 4 Oct 2012 11:26:03 -0300 |
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What about Bayvarol? (flumethrin).
From Wikipedia (has a good reference list):
On treatment with fluvalinate, varroa develops a cross-resistance with all
pyrethoids (such as flumethrin, amitraz and acrinathrin).
But it did not seem true here. We had fluvalinate resistance but amitraz
works (up to now, anyway). So, I am wondering about flumethrin.
By the way, has Amitraz ever been registered in the US, or is the
resistance there all from illicit use?
Stan
On Thu, Oct 4, 2012 at 2:29 AM, Juanse Barros <[log in to unmask]> wrote:
> Amitraz efficacy lasted for around 5 years at Chile, now it doesn't work.
> It is one of the probable causes of the high mortality of this past winter.
>
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