You can put rubbing alcohol directly on a paper towel or tissue and rub that on the old marks. Many hand sanitizers contain rubbing alcohol. Rub them directly on the old marks and wipe off of the board. For tough stains, rub a few drops of isopropyl alcohol around with your finger on the old marks. Use enough alcohol to leave a thin layer. Allow it to sit for a few seconds and then wipe dry.
Erase what you’ve written over as you normally would. This will work well to erase permanent marker from the dry erase board.
This method will also remove permanent marker marks from most smooth, non-porous surfaces. Any brand will work.
You can also clean off old marks with spray deodorant.
Acetone is combustible. Dispose of the paper towels responsibly.
The ratio of vinegar to water should be 1 tsp (4. 9 mL) vinegar to 8 oz. (236. 5 mL) water.
Be sure to remove all of the margarine so it doesn’t prevent writing on the board. If the stain is more than a year old, put some plastic wrap over the margarine and wait 24 hours before wiping the board clean.
Another good solution from the garage is WD-40. It also lubricates and conditions the board.
