I meet the state bee inspector today who told me of an experience last week
in a corner of our state. Apparently a hive being treated with Apistan
(after several weeks) was still infested with varroa. Perhaps resistant
mites are inevitable. I also thought maybe they were old strips (known or
unknown to the beekeeper). I know there are other treatments for the mites,
but wonder if anyone has first had experience with resistant varroa.