[QUOTE I made the same mistake! Soaked the quilt in Biz, the went over any remaining marks with a toothbrush and blue Dawn. Did finally remove them. (my pencil was a #2 , most came out fine it was just a few that were extra stubborn)[/QUOTE]
I second the Biz recommendation. If you use this enzyme product in a granular form, make a strong solution of it by completely dissolving the Biz powder in boiling water. I have soaked items for 3 days or more and it has done the trick. As an enzyme cleaning agent, and not a bleach, I have never experienced fading or color loss of whatever I am soaking. The only time Biz has failed me is after I inadvertently ironed and indelibly set blue Chako registration lines on a heavy cotton weave. It's amazing stuff. Good luck.