JanTx

I tried marking with white chalk, but ... couldn't see the lines. That's why I went to blue.

Phyllis nm

Try to vacuum it off as soon as it is stitched. Wetting may set the color.<o></o>
I dilute red and blue with white chalk or baby powder.<o></o>

cheetahchick

I realize this is years later, but I just had the same problem with the Clover pink chalk and tried everyone else's suggestions to no avail. Finally, because I had just treated a cooking oil stain on a dress, I tried Dawn dishwashing liquid and it worked! I applied it undiluted directly to the fabric, let it sit for awhile (at least 10 minutes) and then rinsed it out. When it dried, I was so relieved to see the chalk marks were completely gone. I hope this helps anyone like me coming along in 2015 with this problem.
Bonnie

minibarn

I have found that soaking in plain water for an hour or so before washing works too.

MFord

Can you get a pink permanent marker and go over the lines? I'd try it on a scrap first,though!

JenF

Shout spray was the only thing that helped me with removing pencil lines so I'll never use pencil again. I was rooting around looking for alternatives and read this thread. Perhaps a "hera marker" is my only choice. Thanks for the heads up.