"But for a pesticide with absolutely no "build up" at all, why wouldn't 
the
chronic oral LD50 have to be nearly the same as the acute oral LD50?  
I'm
not offering an argument here, I'm asking for an explanation of the
mechanisms."

Would the action of the bees evaporating roughly 80% water to roughly 
20% water concentrate the remainder of the solution and possibly make 
more effective any pesticides therein?

Chris

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