> I treat my bees. If I find sick or high mite load bees i treat and when I 
> find a non productive Hive I put a hive tool to the queen and requeen with 
> a productive hive.

I don't think we are in disagreement.  I also know that the queen suppliers 
you mentioned have made some moves in the direction of disease and mite 
resistance, too.

What each beekeeper sees will vary, since management and environment varies.

I'm wondering.  You have monitored all these things for a long time now, 
Bob, and used quite a variety of stock in differing locales.

What are you seeing?

Is there a general improvement in the bees' ability to resist disease and 
pests, and are you seeing longer times between treatments? 

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