My kids seem to always have the grass and dirt stains on their clothes. My daughter likes to sit in the dirt when they are outside--so usually her behind has dirt stains on her pants and shorts. I wash them over and over and can't seem to get them out. Any tips? Is there some kind of magic I can use to get the stains out of her clothes?My son is the grass stain king. Always--on his knees--and have even had it on his behind before..lol Any suggestions on how to remove these?