Removing Grass Stains

I had this problem when my son played baseball. I used it on his nylon white and striped pants. I was told by other mothers to try it..Never used it on solid COLORS. ....Put stain stick on grass stain. Then put in washer in hot water. When it starts aggitating add DISHWASHER soap like Cascade with the detergent. Any brand of dishwasher soap will do. I found the powder brands of dishwasher soap work better than the liquid.
Hope this helps