At 09:15 AM 9/11/02 -0500, you wrote:
>We had been treating religiously twice a year since 1995, at first with
>Apistan until it lost its effectiveness here two years ago, and with
>Coumaphos since.  We had lots of mites in past years, but none now.

I wouldn't rule out residual effect from 2 years of coumaphos. It is very
strong medicine

pb