> Formic was extensively and intensively investigated and employed as a
tracheal and varroa control in Europe long before North Americans found a
need to fight mites.
About early formic treatment in Europe:
http://www.agroscope.admin.ch/imkerei/00316/00329/02079/index.html?lang=en
Kind regards,
Ghislain De Roeck,
Belgium.
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