BoardBrite™ cleaner is designed to remove waterproof and water soluable chalk markers, chalk and wax crayons from write-on sign boards. Sold in a 19 ounce spray can. This cleaner can be used on multiple surfaces such as chalkboards, acrylic, melamine and illuminated write-on signs. NOTE: Not for sale outside of the continental United States. Must ship ground, no air or international shipments.