To safely remove rust stains from natural stone without using acid, you should use a pH-neutral commercial rust remover specifically formulated for natural stone, or apply a DIY baking soda and water poultice. Never use hydrochloric acid or standard household rust cleaners on stones like travertine or limestone, as it will permanently burn and etch the surface.
Safe Rust Removal Methods
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Method 1: pH-Neutral Rust Removers: These specialized chemicals react with the rust, turning it purple, and safely lifting it from the stone without altering the stone’s finish.
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Method 2: The Poultice Method: Mix baking soda with a little water to form a thick paste. Apply it over the rust stain, cover it with plastic wrap, tape the edges, and leave it for 24-48 hours. As the paste dries, it pulls the stain out of the pores.
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