I've been looking for a product that my daughter told me about. Someone she works with in a middle school cafeteria told her about it. My daughter found it...not in with the laundry products but in with the cleaning products in the grocery store. She said it's either WHINK or WINK. Her daughter is in Culinary Arts...her junior year in high school. So she must wear a white chef's coat every day. My daughter said she has tried everything to get out some of the tough food stains. In talked with the woman at work she told her to get this...she did...and it worked. She said you can not see anything after she used it on the stains and then put the coat/coats through the wash cycle. I was at the same grocery chain store...different area...and my husband and I looked the whole way up and down the aisle and we could not find it.