Put window cleaner on an old toothbrush or rag. Then scrub or wipe, scrub with the toothbrush, then afterwards take a rag to wipe it gently. bleach may also work depending on the material. It will work on cloth, but idk on leatherish material, its worth a shot Hope it Helped :)
Toothpaste and toothbrush, or white shoe polish
why not try putting them in the washer?
Whatever u do. DO NOT use bleach. Lol