Use non-abrasive cleaners such as:

-hand dishwashing liquids or liquid laundry detergents

-household all-purpose cleaners or bathroom cleaners (i.e. "409", "Dow Bathroom Cleaner", etc.)

-mild to moderate alkali solutions (i.e. baking soda in warm water, trisodium phosphate in warm water

-(1 tablespoon per gallon, "Spic & Span" solution which contains trisodium phosphate, etc.)

-baking soda moistened with water to a paste; wet surface of tub or stall; gently rub with the paste on a sponge, or soft nylon brush.

Apply all cleaners with a sponge or non-abrasive applicator made of nylon, polyester, or polyethylene. Rub gently.

Always rinse thoroughly to remove all cleaner.

Never use any abrasive cleaner like common scouring powders, nor any abrasive scouring pads, steel wool, and paper, or scrapers.

This article was written by Anne Field, Extension Specialist, Emeritus, with references from Wisconsin Extension bulletin Maintaining Your Home - Care of Bathtub Enclosures. .