Cultured marble -- a mix of marble powder and a polyester resin -- requires a gentle touch when it comes to cleaning. Avoid using abrasives, which may damage the surface. Instead, use a soft cloth and liquid-based stain removers such as vinegar or a mild soap and water to treat many kinds of stains.
Try the Simplest First
Wipe the stained area with a mild dish soap or gentle, nonabrasive cleaner -- in some cases this may be enough to remove fresh stains or substances that have potential to stain if left on the cultured marble. Wipe the area with a damp cloth afterward to remove soap residue.
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Hard-Water, Rust and Brown Spots
Vinegar does the trick when it comes to removing hard-water stains, rust and brown spots -- all caused by forms of mineral deposits. Vinegar eats away at the materials, much like commercial products designed to remove calcium, lime and rust.
Step 1
Mix equal parts white vinegar and water in a spray bottle.
Step 2
Spray the spots with the vinegar solution, allowing the liquid to sit for 30 minutes or longer.
Step 3
Wipe the sprayed areas with a damp sponge or cloth to rinse the cultured marble.
Step 4
Reapply the vinegar treatment if water spots remain, or spray undiluted vinegar over them. Wipe the area with a wet cloth or sponge after 30 minutes.
Stains from Hairspray and Sticky Substances
Remove sticky materials such as hairspray or tar by dabbing the spot with a cotton swab soaked in rubbing alcohol. While alcohol generally will not damage the finish, test an inconspicuous area first to be sure. Cultured marble's stain-resistant properties vary depending upon the manufacturer, the condition of the surface and the type of finish coating the material.