> However, it should not be used as a stand-alone treatment. If overused or
> used at high dosages, oxalic acid can harm bees by crystalizing in the
> midgut of larvae, increasing larval mortality and reducing brood area.
> Overuse of this treatment can also decrease the activity and longevity of
> workers.
>

All this appears to be applications "not according to directions", or
incorrect application and could be assigned to any mite treatment- that
there are repercussions if not used according to directions. The question
is if you do it right, are there issues?

I do use it as a stand-alone treatment and have seen no issues to date. I
listened to our friends in the EU who have been using it many years longer
that us and the only reports i have seen from them is that it is fairly
benign, especially compared to other treatments, and I agree.

Bill Truesdell
Bath, Maine

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