I heard Mr Clean magic eraser works but you might want to test on a fabric scrap first.

I was going to recommend the magic eraser, too. I just used it yesterday to remove some pencil marks. But, as rhilkey recommended, test first.

I used Oxy clean on #2 pencil marks that were 2 to 3 years old.

I use pencil to mark my quilts. Before I wash I use a Shout solid stain stick on all the marks, rubbing it in well.

Jan, I went to Amazon and read up on these pencils. When used for sketching on paper they bleed like water colors right? Does this not happen on fabric when water is applied or is it that in washing so much water is used that the marks come all the way out? When I'm using a water soluble quilt marking pencil (the blue one) I can dab a damp cloth on the mark and it will come out. It appears that I might not be able to do that with this. Could you please clarify some more on this. I'm intrigued by this and value your expertise.

I've had success in using this product called Sew Clean, found in some quilt stores. It also removes ballpoint inks.

Good luck with the stain. I have a quilt with pencil marks on it that have been there for ages. Don't know how to get them out so I am very interested in this answer. Good luck.

This works on regular pencil marks so give it a try.
3 parts rubbing alcohol
1 part water
1 generous squirt of CLEAR dish detergent
Pour solution into a jar, tightly covered. This will last a long time.
When ready to remove the pencil marks, saturate a cotton ball with the solution and rub over the pencil mark. When dry, the pencil mark should be gone.

I had one, the dog uses it now..........................

I use them too without any problem.
They are also available in the art section of Ben Franklin. I get mine there.