Hi:  Well, I can assure you all that 3000+ feet has no discernible effect
on supressing varroa mites.  In Montana, most of us live at that
elevation or higher.  For example, Bozeman and Butte are above 5000 ft.
 
We all get varroa mite and it kills our bees.  Last two years, our
hobbiests have all got it and their colonies are dropping left and right,
unless they treated.
 
Jerry Bromenshenk
The University of Montana
Missoula, MT
 
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