How can I clean these black spots off my dishes?

Susan Gilbert
by Susan Gilbert

My stoneware dishes have developed a blackened coating on them. Not sure if it’s from the dishwasher. How do I get it off?

  15 answers
  • Redcatcec Redcatcec on Dec 19, 2019

    Hi Susan,

    This is weird!

    Try Bar Keepers friend. Is this happening with a certain d/w product? Maybe try another product or send an email to the d/w detergent product stating this is happening with their product and see what they have to offer as an explanation. Have the pkg info ready.

  • I would try Magic Eraser.

  • Janice Janice on Dec 19, 2019

    The Mr. Clean Magic Eraser will work well on your black spots. Simply dampen the sponge and rub over the areas and just like that, they will be gone!

  • Vimarhonor Vimarhonor on Dec 19, 2019

    Hello I would suggest barkeepers friend it is wonderful for Pyrex dishes and getting off utensil marks on white dinner plates.

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  • Dee Dee on Dec 19, 2019

    It is from the dishwasher. Use Bar Keepers Friend and a scrubbie. It will come off but if you put in dishwasher regularly it will happen again. It is caused by the minerals in the water. You may try cleaning the inside of your dishwasher with Afresh.

  • Simple Nature Decor Simple Nature Decor on Dec 19, 2019

    Soak stoneware in clear, hot water to loosen any baked-on foods. Scrape off excess food using a nylon scraper or a kitchen brush. Prepare a baking soda paste by mixing ½ cup baking soda with 3 tablespoons of water. Spread the paste on the stoneware and let it stand for 10–15 minutes.

  • William William on Dec 19, 2019

    Try using a dab of white toothpaste and a damp toothbrush. Let it foam up while brushing. You can also use a damp cloth.

  • Agnes Chrzanowska Agnes Chrzanowska on Dec 20, 2019

    baking soda with toothpaste should do a trick

  • Homeroad Homeroad on Dec 20, 2019

    Did you try a Mr. Clean Magic Eraser? It may also be the glaze used that isn't dishwasher safe, but I would try the eraser first.

  • Susan Gilbert Susan Gilbert on Dec 20, 2019

    Thanks for all the suggestions. Getting ready for Xmas so haven’t had time to try them yet. I’ve had these dishes for 45 years and they have always gone in the dishwasher. It just started happening a few months ago! Will let you know.

  • Janice Janice on Dec 22, 2019

    Mr. Clean Magic Eraser will work for you. It truly is like Magic! Works great on stained coffee or tea cups too!

  • Linda Linda on Dec 24, 2019

    Lime Away! The deposits are probably from hard water. I spray Lime Away on the dish, wait about 30 seconds, and use a Scotch brand scrub sponge. Works like a charm. Use rubber gloves.

  • Lifestyles Homes Lifestyles Homes on Dec 27, 2019

    Yes, clean the dishwasher. I would use a tablespoon Lime Away and fill up the bottom with a gallon of white vinegar and run it on its hottest setting.

    If none of the above suggestions work, make a solution of two scoops oxygenated bleach (genetic oxyclean) and two large bottles of dollar store hydrogen peroxide and a teaspoon of dish soap. Mix solution in a big plastic dish-pan bin and stir until dissolved. Soak the dishes in there for a day.

  • Shevi Shevi on Mar 20, 2022

    This is the only thing on google I can find related to my issue. The same black spots or whatever that is has been popping up on my plates plastic and glass in our cupboard as well. I do not use the dishwasher I had wash my dishes all the time and this has started to happen! Anybody have any idea what it is or why this is happening?!

    • See 1 previous
    • Hope Hope on Oct 05, 2022

      Same here I hand wash my dishes as well and this just started happening all of the sudden on all of my stuff plastic or glass I see u posted in March did u ever figure it out?

  • Mogie Mogie on Oct 09, 2022

    This might not help but after harvest weed can leave black spots on floors. WD40 works great at removing those.