Yes, not so much a bee kill but a case of misuse causing considerable disruption.  Years ago, I was monitoring over 40 colonies of bees around a pollution source.  The commercial beekeeper found that he could buy the product directly from a chem supply house at considerable savings.  He over-dosed 3500 colonies.  Bees flushed right out onto ground, emptied boxes.  Most went back in, so he thought - all's well that ends well.  And this really worked well.  Except he lost 
about 28% of the queens!

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