Current spills?
Use a paper towel to blot up any liquids like wine or cola that spill on your futon cover. Remove mustard, ballpoint pen, red wine, coke, tea, coffee and grape juice simply by using mild soak and lukewarm water. Rub gently in a ciruclar motion with a sponge or soft brush. Pat the area dry after cleaning. If the spill soaks through the cover, stand up your futon mattress too, so that its cotton batting can dry quickly. If any stain remains on the cover, a simply laundering should remove it. This procedure resolves most stains.