> Back to my original question: Is anyone aware of any research, or any "good anecdotal evidence" suggesting these "PRO DFM" or other "probiotics" or supplements for honey bees, actually work as they're advertised?
A few years ago I tried it on 20 hives, left 20 hives untreated. Never saw any difference. A Canadian beekeeper I follow reported that he had an increase of nosema using it.
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