There's a guy in Patton that claims it's working, but he also says it will turn the grass a little brown. I don't know anyone else that has tried it. Sounds like a great thing if it would do that and not stunt the leaf too much. I believe that I don't have enough cows to be effective, and running a 8' bush hog over it after a rotation gets tiresome and expensive, and sometimes need to clip it before they move that much. I have a couple of patches that go to seed every year.