I have used Dritz Chalk used in a holder similar to a mechanical pencil. This chalk WILL come out (no matter what color) by rubbing it with a microfiber cloth -- I can't speak for the brand the OP used, though. White is a little more difficult to get "stuff" out of than colored cloth.
Last edited by Jeanette Frantz; 08-03-2017 at 02:27 PM.
Reason: Correction