"Ken Anderson" > wrote in message >...
> I emptied my 12 volt sprayer of broadleaf weedkiller, then put in Mancozeb. I
> sprayed on the ground until I was sure the yellow Manc was coming out, then
> proceeded to spray my grape vines. Damned if the first vine or two didn't get
> damaged. I'm dumbfounded that there was enough weedkiller residue left in
> there to do this. Hopefully, they'll recover. So, I pass my experience
> along. A word to the wise.
> Ken

Triple rinse with water, including the hose. That's the law in the USA.