Ari Seppälä wrote:
> About 10 years ago varroa become resistant to fluvalinates,and beekepers
> changed to use more formic acid in varroa treatments. Tracheal mites
> almost disappeared for several yeras. Now the trend in varroa treatments
> is more for thymol + oxalic.
Ari,
What caused the shift away from Formic? From all I have seen, it is the most effective treatment for a host of
problems.
Bill Truesdell
Bath, Maine
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