I'm not a big fan of the Roxanne's pencils. I use them when I have nothing else that will work. Have you washed the quilt and the marks are not coming out? Or are you just trying to rub them off somehow? I don't think I've had issues with the marks not washing out. I've actually never had an issue with any marking tools I've used not washing out except once with #2 lead that had previously washed out with no issues. That's what I usually use for light fabrics and I've become a big fan of the Bohin mechanical pencil with white lead for dark fabrics. The mechanical style pencils fit much better in the stencils to my way of thinking.