I haven't tried this yet, just rec.'d it this week, but I was told about this hard bar laundry soap to get out a dye run. Fels Naptha. I can't tell you anything about this but was told that a lady had a zebra print that the black ran, and she used this and got all of the black out of the white. I have a quilt I am going to use this on. I couldn't find this soap around here, but I found it on Ebay and ordered a bar. Anything is worth a try. Gerbie.