> > I am struck that no one is suggesting a combination miticide attack.
> > Alternating Apistan and Coumaphos.
>
> I recall that the active ingredients in Apistan and Coumaphos
> are a bad
> combination, and to
> be avoided.  I don't recall the specifics, but details are in
> the archives
> somewhere.

There was some thoughts that it will take N generations of mites
before Apistan will be useful against a mite population that
had become resistant. Rotation would only continue the resistance.