Apistan® is probably the best and simplest defence against the varroa mite. Since the 1980s it has been the benchmark treatment and is now registered for use in more than 40 countries. It is very easy to apply – simply insert two strips in the brood box of a standard colony for six weeks at the end of the season.
Unfortunately, mis-use of pyrethroids has accelerated natural biological processes which means that in some areas resistant mites have developed.