Robert Brenchley asked:
> How frequently can you use oxalic treatments? I'm sure I've read somewhere
> that if they're repeated within the life of a single generation of bees
> then
> the cumulative effect can kill bees
That seems to be the convential wisdom, but I have dripped oxalic (3.5%, 5ml
per seam) twice at an interval of two weeks with no apparent ill effect.
Peter Edwards
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