How do you clean a rust stain in your cast iron tub?

  8 answers
  • Redcatcec Redcatcec on Dec 24, 2018

    Hi Roseanne,

    Have you tried a product called CLR, which stands for calcium, lime, rust. That should cut through your rust stain, available at DIY stores, and other places like Walmart .

  • Rosanne Rosanne on Dec 24, 2018

    Hello Redcatcec,

    I have and it didn't work. It's a stain that runs down under the facet so it's kind of hard to get solutions to stay on it. I have tried several things but nothing has worked so far.

    Thanks for your suggestion thou.

    • Vickie Woz Vickie Woz on Dec 26, 2018

      I used a pumice stone on mine. It didn't take the stain completely away but it definitely made it much lighter. I also didn't have any luck with the CLR.

  • Try a mixture of borax and lemon juice, Roseanne

  • John E Johnsrud John E Johnsrud on Dec 24, 2018

    Muriatic Acid, water down 50-50 first, them gradually up in strength, this will cause fumes so be careful keep your head back, wear gloves. this is the pure form of CLR. Harsh but this cleans most rust off anything.

  • Larry wallace Larry wallace on Dec 25, 2018

    I know it sounds weird but try oven cleaner, I build model cars and use it to remove bad paint jobs, it doesn't affect the plastic. It sprays on an stays pretty good try it on an inconspicuous area 1st to make sure it won't damage the surface. I've used it to get layers of paint off aluminum window frames and rust stains off an antique enamel pot. Make sure you follow all the safety guidelines.

  • Cindy Cindy on Dec 25, 2018

    Hi Rosanne. I'm Cindy. Make a paste using baking soda and a little water. Spread the paste on the stain. Let it set overnight. The next morning, gently scrub the paste away with a microfiber cloth. Rinse any remaining baking soda from the tub. Repeat if needed. Good luck Rosanne and Happy Holidays.

  • MoMo MoMo on Dec 27, 2018

    There is a cleaner called Whink. Brown bottle found in the grocery store among the 'special purpose cleaners'. Works wonders. No soaking. Inexpensive.

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