Wash moldy dishes in hot water with dish soap first

Start by rinsing the dish under running water to remove loose mold spores. Use a sponge or brush with hot water and regular dish soap to scrub all surfaces — the mold itself is not toxic once dead, but you want to remove the visible growth and any food residue that feeds it. Scrub the bottom, rim, and any crevices where mold hides.

Hot water matters because it kills more organisms than cold water does. If the dish is dishwasher-safe, you can skip to the dishwasher step below. If you are washing by hand, rinse thoroughly under running water after scrubbing to remove all soap residue.

Key Takeaways

  • Wash moldy dishes with hot water and dish soap first to remove visible mold and food debris.
  • A dishwasher on a hot cycle disinfects better than hand washing because it reaches higher temperatures for longer.
  • For stubborn mold in crevices, soak the dish in a diluted bleach solution (one part bleach to nine parts water) for 10 minutes before washing.
  • Porous dishes like stoneware or unglazed ceramics may hold mold spores even after washing and may not be worth saving.
  • Dry dishes completely and store them in a dry place to prevent mold from returning.

Run the dish through a hot dishwasher cycle

A dishwasher is the most effective way to disinfect moldy dishes because it reaches temperatures of 140°F to 160°F and holds that heat for a full cycle. This temperature kills mold spores and bacteria more reliably than hand washing. Load the dish normally and run a standard hot cycle — you do not need a special sanitize setting, though many dishwashers have one.

If the dish is not dishwasher-safe, skip this step and move to the bleach soak method instead. After the cycle finishes, remove the dish and let it air-dry completely before putting it away. Any moisture left behind can allow mold to grow again.

Soak stubborn mold in diluted bleach

For mold that does not come off with soap and water, mix one part household bleach with nine parts water in a sink or large bowl. Submerge the dish and let it soak for 10 minutes. The bleach kills mold spores that soap alone might miss, especially in textured or porous areas.

After soaking, scrub the dish again with a brush under running water to remove any remaining mold and all bleach residue. Rinse thoroughly — bleach left on a dish you eat from is not safe. If the mold still does not come off after this step, the dish may have absorbed mold deep into its material and may not be worth keeping.

Why porous dishes are harder to save

Glazed ceramic, glass, and stainless steel are non-porous and easier to disinfect because mold cannot penetrate the surface. Unglazed ceramics, stoneware, wood, and silicone are porous — mold can grow inside the material itself, not just on top. Even after washing and bleach soaking, mold spores may remain trapped inside.

If a porous dish has had mold for more than a few days, or if mold returns after you have washed it, replacing the dish is often the safer choice. The cost of a new plate or bowl is usually less than the risk of mold spores returning to your food.

Dry and store dishes to prevent mold from coming back

After washing, dry the dish completely with a clean towel or let it air-dry in a well-ventilated space. Any standing water or dampness will allow mold to grow again. Store the dish in a dry cabinet or shelf — not in a damp cupboard under the sink or in a closed container without airflow.

If you notice mold returning frequently on clean dishes, the problem is likely your storage location or your dishwasher. Check that your cabinet has good air circulation and that your dishwasher is draining properly and not leaving standing water inside.

When to throw a dish away instead

Discard a dish if mold has penetrated deep into the material and returns after washing, if the dish is chipped or cracked (mold can hide in the break), or if it is made of a highly porous material like unglazed clay. Mold that smells musty even after washing is a sign the spores have gone deep into the material.

Do not try to save a dish just because it was expensive or sentimental. Once mold has colonized the material, you cannot fully remove it, and using the dish risks spreading mold spores to your food and kitchen. A replacement dish is a one-time cost; repeated mold exposure is not worth it.

Frequently Asked Questions

Is it safe to eat off a dish after I have washed the mold off?

Yes, if you have washed it thoroughly with hot water and soap or run it through a hot dishwasher cycle. Mold itself is not toxic once dead, and the heat and soap kill the spores. The risk is if you do not remove all the mold or if it returns because the dish was not dried completely.

Can I use vinegar instead of bleach to kill mold on dishes?

Vinegar can help remove some mold, but it is not as effective as bleach at killing spores. If you prefer not to use bleach, wash with hot water and soap first, then soak in white vinegar for 30 minutes. For stubborn mold, bleach is more reliable.

What if mold is growing inside a cup or glass?

Fill the cup with the bleach solution (one part bleach to nine parts water) and let it soak for 10 minutes. Use a bottle brush or pipe cleaner to scrub the inside. Rinse very thoroughly under running water to remove all bleach. If the mold does not come off, the cup may have a crack or chip where mold is hiding.

How long does it take for mold to grow back on a clean dish?

Mold grows back only if the dish stays damp or is stored in a humid, poorly ventilated space. A completely dry dish stored in a dry cabinet will not grow mold. If mold returns within days of washing, your storage location is too damp.