The Best Way to Remove Rust Stains From Enamel Sinks and Tubs

As you’re washing dishes in the sink or filling the tub, you might notice stubborn orange rust stains marring your white enamel. While they may seem difficult to remove, most of these stains can be lifted without scratching or dulling your enamel’s finish—with the right techniques, of course.

To help you tackle your rust removal with confidence, we consulted with two cleaning experts. They shared their favorite DIY method, a commercial cleaning option for tougher stains, and the most common mishaps you should definitely avoid during the process. 

What Causes Rust Stains on Enamel?

Know that rust stains are common—though that doesn't make them any less frustrating. "Rust stains are caused by iron particles present in hard water, old pipes, and other metal items, such as cans, razors, and steel wool pads that remain in contact with a moist enamel surface for a sufficient period," explains cleaning expert Elena Navarro. Thus, the process of oxidation commences. "This occurs when the iron particles react with oxygen and moisture, causing the formation of the orange or reddish-brown iron oxide deposit," Navarro says.

Toby Schulz, CEO of Maid2Match, adds that rust stains can be particularly difficult to remove if you let them sit or build up for any period of time, making timeliness critical for success.

How to Remove Rust Stains From Enamel With Household Staples

Don’t want to use any harsh chemicals? Our experts recommend a DIY solution to eradicate your rust stains (with items you probably already have at home).

Materials Needed

• Baking soda or citric acid powder
• Water
• Lemon juice or white vinegar
• Soft sponge
• Microfiber cloth
• Small bowl

Instructions

1. In a small bowl, mix baking soda with a small amount of water until it forms a thick paste-like consistency. Schulz adds that you can also use citric acid powder if you have that on hand instead.
2. For extra stubborn rust, Navarro suggests adding a few drops of lemon juice or white vinegar to boost acidity without damaging the tub’s enamel.
3. Spread the paste over the rust stain, ensuring the entire spot is covered.
4. Allow the paste to sit for about 15-30 minutes. This allows the mixture to break down the rust.
5. Using a soft sponge, gently scrub the stain in small circular motions.
6. Rinse the surface with water, then wipe away any residue with the microfiber cloth.
7. If the rust stain is still visible, repeat the steps above.

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How to Remove Rust Stains From Enamel With a Commercial Cleaner

If you need something a little stronger for your enamel’s rust stains, consider using a commercial cleaner. Be sure to read the label thoroughly, double-check that the product is material-safe, and follow its instructions carefully.

Materials Needed

• Rust-removing commercial cleanser (such as Bar Keepers Friend or CLR Calcium Lime Rust Remover)
• Soft sponge
• Microfiber cloth
• Warm water

Instructions

1. Using warm water, lightly wet the rust stain.
2. Apply a small amount of commercial cleaner to the stain. Our experts recommended using Bar Keepers Friend or CLR Calcium Lime Rust Remover.
3. Using your soft sponge, gently scrub the rust stain. You don’t need to let the commercial cleaners dwell as long as a DIY solution. Leaving the solution on past the label's recommended time could damage the enamel.
4. Rinse the area thoroughly with water to remove all residue.
5. Dry the surface with a soft cloth to prevent new mineral deposits from forming.

Common Mistakes to Avoid

Don’t make one of these costly mistakes, our experts warn. They could cost you (and your enamel) in the long run.

• Using bleach: Navarro warns that bleach binds to rust stains, which can actually make removing the stain more difficult.
• Choosing heavy-duty products: "Homeowners should also avoid using any cleaning product labeled 'heavy-duty' unless it has been tested to be safe for use on enamel," Navarro says, "as many of these products will etch the glaze off of the enamel."
• Using abrasive tools: Cleaning tools like steel wool, wire brushes, and metal-scouring pads should not be used on enamel, Navarro says. This is an easy way to damage the glaze, which means rust stains will develop more easily in the future.
• Falling for miracle cures: While the methods above are tried-and-true, know that there is no miracle cure for some longstanding rust stains. "If you've tried to remove the stain with baking soda paste and/or other methods and it still doesn't budge, or if you can detect roughness or pitting under the stain when you run your fingers over the affected area," explains Navarro, "then the iron oxide has likely seeped into or under the glaze and the enamel is damaged beyond repair."