I have read a lot about varroa prevention measures.  What I cannot find a lot on
is how these bees actually get the mites in the first place.  Are they picking
them up on flowers previously visited by other infested bees?  Are they
crawling into hives on their own?  I know that drifting of infected bees to
other hives can be a way of spreading mites, but that can't be the major
problem.  Where are bees from hives with no mites, suddenly picking them up?

It seems that the measures to prevent them are only to kill them with pesticide
after infestation.  What about prevention before infestation?  I just haven't
heard or read anything on this part of the picture.  Any thoughts???

Thanks--  BTW I am in Salt Lake City, UT area.

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