Rodney,
What I know is that it is not as lethal as the other formulations of Sevin.
 It's LD50 is 26.5 where the LD50 for Sevin SL is 13.7.  It's residual
toxicity to honey bee populations in cage tests is less time depending on
rates (hours as opposed to days).  All in all though it is still belongs in a
class that is highly toxic and if it's possible to avoid I'd do it.  I've
never sat through a spray job using the material the growers have opted for
others.
 
Brian Tassey
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