> Has anyone here any data on the effects on wintering or spring performance
of colonies repeatedly dosed with OA vapour?
Two rules here, Allen:
- only one application of oxalic acid in a bee's lifetime
- no application when brood in the hive
In Italy, where OA-application against varroa started, beekeepers used OA
repeatedly and at a higher concentration as 3,5%, but they came back from
it!
Ghislain De Roeck,
Belgium/Europe.
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