I know the blue marking pen that disappears with water, if it has been on the fabric a long time or will not wash out use a tablespoon of banking soda to a quart of water and let stand. I do not know if it will work with the marking pencil. Good luck.

Colored chalk has dye in it for the color. I think each batch of colored chalk gets more or less color then other batch. Different workers, using up the rest of the dye, equipment clean out, who knows.

I know what an awful feeling it is to see those lines. Good luck I hope they come out for you.

Upsetting, incredably upsetting. No suggestions, but please let us know how this last mixture works out.

This was my mothers method...must have worked...didn't know they still sell it. Thanks

Hope by now you have it all clean! I don't have a remedy, but just a thought...if it survived all these washes...you can bet it is going to hold up for years to come!

Oxy-clean is my standard answer. So all I can do is offer a hug ((((((((((ankegram)))))))))))))

Ihave sprayed shout on the markings and left soak in then wash with detergent
my marks have always come out - i have one marking pencil that blead to the backing
it washed out fine
good luck hope this works

Praying it comes out

Like someone else said. Shout! I had a pink chalk marker that not only didn't want to come out of the fabric it stained my ruler and my plastic sewing machine foot. The fabric I used Shout and most of it came out. I am going to find a bar of Fels Naptha and keep that around too.