Zig Posterman Markers
A great sign-painting marker for use on chalkboards, whiteboards, glass or mirrors. Popular in restaurants and grocery stores that use chalkboards to drive customers to specials. Also used for school projects like banners, posters and event signage.
The marks are resistant to water, but will clean off glass, chalkboards and other non-porous materials with ammonia-based cleaners. For a more natural cleaner, try using a mix of vinegar and water.
Note: If you have manually painted a board with black or green chalk board paint, these markers may not wash off easily. Always test to be sure the markers clean off the chalkboard.
If you want your marks to wash off with plain water, try the Posterman Wet-Erase or Zig Illumigraph.