> The reason that we stick to thymol, formic, and oxalic is that at the
> levels used, they are generally recognized as safe, and part of a "natural"
> diet, so both bees and humans have had a long time to evolve to deal with
> them.
>

I understand what you mean, but the levels we put in a hive are not safe
but the amount transported to honey is.

I certainly would not want to be in a small enclosure and breath 2 grams of
vaporized oxalic acid - or formic pads over several days, for that matter.

Bill Truesdell
Bath, Maine

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