All stains on papers should be treated as soon as possible with clean water, by using a soft cloth (white) or sponge. For harder stains a mild detergent solution with warm water can be used, being careful not to flood the surface. Abrasive rubbing of spots should be avoided, discoloration and delamination may occur. More care should be taken in cleaning any dark colors because of the possibility of causing "light marks". Occasional vacuuming will aid in maintaining the paper product's fresh look.