Planning to try using vinegar to kill the grass that is growing up in my pathway. It would be nice to get the mosses started there again, there are a few spots of moss still growing but the majority has died out. There are so many different formulas that I decided to do more reading on the subject. For anyone wanting to try the vinegar spray, I suggest you go to this link and read up on the findings of “The Garden Counselor.” The findings are quite interesting and informative. http://www.garden-counselor-lawn-care.com/vinegar-weed-killer.html