Dear JanTx
I am SO SORRY that you suffered the same problem as I did. I posted my problem on this Thread:
http://www.quiltingboard.com/main-f1...t-t167327.html
The vinegar worked a little bit but when I called Clover Customer Service (they are only 20 miles north of where I live). they suggested using a Mr. Clean Sponge. THAT took a bit of the color OFF. I just HOPE that the chalk will eventually come out. I also used a Blue be Gone marker and it came out with just a misting of the quilt. I had used the Clover white chalk and NEVER had a problem with it coming off. I am as ANGRY as you must feel. Their number is on their website. Call them and complain. I noticed a disclaimer on Fons And Porter Blue chalk powder chalk but no additional helpful information. PLEASE FELLOW QUILTERS !! DO NOT USE CLOVER BLUE, RED OR YELLOW POWDER CHALK !!!