Treated grass clippings in compost pile. I remember reading a post on here the other day that mentioned not putting clippings treated with a certain herbicide into a compost pile. Why is this? I do mostly maintenance and collect a lot of clippings with my Walker mower and it all goes in a big pile in the pasture. The stuff from 07 is ready to use. I do not turn these piles or add anything to them, I just let mother nature take her course. How long does the herbicides that say not to use in a compost piles hang around, does it hurt to use it in non food areas?