>>
>
> I'm sorry but it isn't so that in Europe 'everyone treats his/her colonies freely with OAV in the presence of honey to harvest', on the contrary it is strongly discouraged by all official authorities!
Hi Ghislain & All
Thank you Ghislain for interrupting this thread. I think that the only proof that many would accept is a beekeeper using oxalic vapour found dead in the beeyard.
Bob Darrell
Caledon Ontario
Canada 44N80W
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