Hi Allen and Everyone,
A few years back - ok probably several years back - there were reports on research done in Canada using menthol for varroa control.  In the articles in American Bee Journal menthol seemed to work fairly well as I recall but the varroa mites had to feed on it for it to have any effect.  The research reported using a microencapsulated form of menthol which was fed to the bees so the mites got it when they fed on the bees.  Have not heard any more about it so either they have run into problems administering it or it didn't work out as well as thought.

FWIW

blane


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Blane White
MN Dept of Agriculture
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