>
> <I am particularly concerned about oxalic acid treatment. The general
> wisdom
> seems to be the bees should only suffer this once. That is fine for
> workers, but what about the queen?>
Haven't tried it myself, but are you referring to dribble or vapor or
both? I've read about quite a few people recommending doing 3 rounds of
vapor a week apart to catch a whole brood cycle. I believe they also
claimed vapor was less toxic but it's been a while since I looked into it
because I've had reasonable control with formic.
Jeremy
West Michigan
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