So, to enter this discussion I need to say that my work in not “research” but i do testing on bees for gut  bacteria and other bacteria as well as for virus.  I use mass spectrometry proteomics for the data collection and sample analysis.  I do look at and see the gut bacteria. I do see the changes in bacteria both in quantity and in variety.  I have my perspective on whether it works or not or is beneficial to the bees.  If any of you would like to test your bees bacteria I could provide the testing for your experiments.  It would get you involved with your own bees and for your own satisfaction.   Contact me as you want.  Best to all Dave Wick. 406-369-4214. BVS, Inc

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> On Nov 4, 2019, at 10:52 AM, Alexander Jackson <[log in to unmask]> wrote:
> 
> 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?  
> 
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