Alden Marshall writes:  "Perhaps just as important, compromised health of 
the house bees rearing those winter bees. Are the food producing glands 
glands up to the task?"

That is a good question.  It is what Dee seems to think may result from 
chemical treatments.  And she may be right.   My point is do we know?  Not 
only is there the question of whether we know that said treatments have 
this effect at all, but if they do is it more harmful to the bees than a 
heavy mite load would be.  For those who have solved their mite problem 
without using chemicals this is a moot point.  For those of us who haven’t 
it is not, and we would like to see the scientific evidence.

Steve Noble 

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