Dr. Pedro Rodriguez wrote:
> Regarding adding vinegar to sugar solution for feeding bees: This
> might be a futile effort since it does not take long before the
> feeder oxidizes becoming somewhat acid, same effect as if adding
> vinegar. One can smell the presence of vinegar in the feeding
> containers when opening the hives.

The acid formed is acetic acid (vinegar) from the fermentation of the
sugar syrup. Fermented syrup is bad for bees as noted by Allen.

Bill Truesdell
Bath, Maine

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