How Do I Clean My Tub?If the tub has a PORCELAIN interior we recommend using a mild cleaner for routine cleaning and cleaners like Bon Ami or ZUD for tougher stains. Never use abrasive cleaners on REFINISHED tubs – mild soap and water should do the trick. Clean your refinished tub with the same care you would use to wash the hood of a new car.
Bon Ami
ZUD
How Do I Remove Rust Stains?
This answer is for PORCELAIN TUBS only - do NOT use this cleaning method on a refinished tub. Surface rust should come off with a mild cleaner. You can use more abrasive cleaners like Bon Ami or ZUD for tougher surface stains. For rust that has come through the porcelain, we recommend rubbing the problem area with a damp terry cloth using a solution of 1 part muriatic acid to 1 part water. Muriatic acid is available at most hardware stores. Remember: always add the acid to water, never add water to acid. Wear clothing that covers exposed skin areas. Use gauntlet-style acid-resistant gloves and eye protection. The acid/water solution will start to dissolve the rust as well as a bit of the porcelain. When the rust is gone, apply baking soda to the area to stop the reaction, wash the area with soap and water, and dry. Then prime the exposed cast iron with a metal primer and paint with a waterproof epoxy paint (like Krylon).
For more information about the safe handling and the disposal of muriatic acid
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