White boards, or dry erase boards, are a useful addition to most homes, offices and classrooms. Small boards in the home give you a place to write down grocery and to-do lists while larger boards in the office or classroom provide an easy-to-see surface for meeting and lesson notes. Special markers are necessary for the white boards, as these erase easily and leave no marks behind. The waxy residue of crayons doesn't wash off easily but it can be removed with the proper cleaning supplies.
Spray the white board with white board cleaner or use rubbing alcohol. Wipe the board down with a clean, lint-free cloth, removing any marker residue or dust in the crayon marked area.
Spread a thin layer of non-gel toothpaste over the crayon mark. Toothpaste is a mild abrasive that removes the crayon wax without scratching the board.
Rub the cloth over the toothpaste in a back-and-forth motion over the toothpaste. Add more toothpaste and repeat the process as needed until the marks are removed.
Spray clear water onto the area once all the crayon marks are removed. Wipe the board dry with a clean cloth.