There are rumours that fogging with oxalic acid vapour has an effect on tracheal
mites, but I have not seen anything definitive.
Inasmuch as, according to some sources, one of the products of heating OA is
formic acid, that seems plausible.
Does anyone have any references on the question?
TIA
Allen Dick, RR#1 Swalwell, Alberta, Canada T0M 1Y0
51 33'39.64"N 113 18'52.45"W
http://www.honeybeeworld.com/diary/
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