Cleaning old vinyl floor tiles requires a gentle, targeted approach to lift decades of grime, yellowing, and scuffs without harming the delicate PVC surface. Start by vacuuming with a soft-bristle attachment, then damp-mop using a pH-neutral cleaner diluted in warm water.  For deeper buildup, use a baking-soda paste and scrub lightly with a microfiber cloth. Treat stains individually—rubbing alcohol for scuffs, a vinegar-water mix for grease, and diluted...