Darn, I love to quilt and purchased a whole set of these Frixion pen and you can be sure I am going to try to really remove all the ink though I don't make quilts for show now but it would be awful for me to use them and then try to remove the stains. Have a thought and will try it in Sept. as I am just too busy now to end of August. Thank you for all the posts. Will let you know if my methods work because I won't use them if I can' get the stain out. I've always used the blue water removable ones for marking. I'm going to try them on white fabric.