Removing Mildew Stains and Odor from Clothes, Carpet, and Upholstery

Mildew or mold is a live, growing organism that lives in the air that can attach to most surfaces, including fabrics leaving stains and damage. It can cause pesky stains that are difficult to remove if you don’t use the correct cleaning agents. Still, you can remedy it with store-bought detergents, common household supplies, and washing in temperatures above 140 degrees Fahrenheit.

The fungus can be easily identified as a patch of gray or white lying on the fabric’s surface. It may also look like black or green spots, appearing almost “fuzzy” or slimy. The odor of mold or mildew is musty, pungent, and often putrid. Even if you can’t see any spots or growth, the smell indicates that spores are growing, and removal treatment is needed.

Whatever type of fungus growth you see or smell, never ignore it because it can eat away at natural fibers damaging and weakening fibers and leaving stains on all kinds of clothes, carpets, and fabric furniture.

Stain typeFungus
Detergent typeHeavy-duty detergent, chlorine bleach, oxygen bleach
Water temperatureHot (if possible based on the fabric)
Cycle typeVaries depending on the type of fabric

Before You Begin

Isolating a mold or mildew spot will be the best idea to contain the spores. Take the item outdoors to shake or brush off the spores. You don’t want it to spread to the rest of your home, clothes, or fabrics.

Warning

Use a dust mask like an N95 respirator to avoid inhaling the spores. Other recommended protective gear includes gloves and goggles or eye protection.

If you have dry-clean-only items needing cleaning and use a home dry cleaning kit, treat any visible stains with the provided stain remover before adding the garment to the dryer bag.

For small rugs or carpets that are washable, use the exact instructions for washable clothes. However, if you have wall-to-wall carpet with extensive mildew or mold growth, the best solution is to remove the carpet and the padding and discard it. Similarly, remove and discard the fabric and the interior padding if the mold is extensive on the upholstery. You may be able to save the wooden or metal frame of the furniture piece.

Materials

  • Heavy-duty laundry detergent
  • Chlorine bleach (white fabric)
  • Pine oil or phenolic disinfectant (colored fabric)
  • Oxygen bleach

How to Remove Mildew Stains and Odor From Washable Clothes

  1. Brush Away Spores Outside

    To remove mold or mildew from machine-washable clothes, take the affected items outdoors to shake or brush away the spores. Remove as much of the powdery substance as possible to brush both sides of the fabric. Go outside to prevent spreading the spores inside your home, where they can continue growing.

    The Spruce / Ana Maria Stanciu

  2. Spot Treat, Wash, and Disinfect

    After brushing, each spot should be pretreated with a heavy-duty liquid detergent (Tide or Persil contain enough enzymes to break down the stains). Allow the detergent to work for at least 15 minutes before washing the stained items in the hottest water recommended on the care label.

    To disinfect the fabric and kill the spores, add chlorine bleach to the wash cycle of white 100 percent cotton fabrics. Use pine oil or phenolic disinfectant if the materials are synthetic or colored.

    The Spruce / Ana Maria Stanciu

  3. Inspect Stain

    If stains remain after disinfecting the clothes or linens, you can use oxygen bleach on all types of white and colored fabrics to remove the stains. Note: Oxygen bleach will not kill mildew spores.

    The Spruce / Ana Maria Stanciu

  4. Soak in Oxygen Bleach Solution

    For persistent stains, use oxygen bleach by following the package directions to mix a soaking solution. Completely submerge the stained fabric and allow it to soak for at least eight hours or overnight. If the stain is gone, wash as usual. If it remains, mix a fresh solution and repeat. It may take several soakings to remove the mold and mildew stain, but it should come out.

    The Spruce / Ana Maria Stanciu

How to Remove Mildew Stains and Odors From Dry-Clean-Only Clothes

  1. Brush Away Spores Outside

    Fabrics labeled as dry clean only with mildew spores should be brushed outdoors using a soft bristle brush. If the material is napped like velvet or faux fur, brush gently in the direction the surface should lie.

    The Spruce / Ana Maria Stanciu

  2. Prevent Spores From Spreading

    After brushing, place the garment in a cotton or plastic bag to prevent the spores from spreading, and immediately take the garment to a professional dry cleaner. Point out and identify the stain to your cleaner.

    The Spruce / Ana Maria Stanciu

How to Remove Mildew Stains and Odors From Carpet

  1. Turn Over Affected Area and Dry It Out

    If you have a small area of mildew, attempt to stop the growth and remove the stains by pulling up the affected area and removing any wet or mildewed padding. You should entirely dry the carpet and floor with a fan and dehumidifier for at least 48 hours.

    The Spruce / Ana Maria Stanciu

  2. Saturate With Anti-Mold Spray

    Spray the carpet with anti-mold spray. Follow the directions on the product. Make sure to soak the carpet on both the front and back completely. Spray the flooring with anti-mold spray as well. Since you should not rinse away most anti-mold spray, allow it to dry completely. Soap and water will not kill the spores, so you must use an anti-mold product.

    The Spruce / Ana Maria Stanciu

  3. Use Oxygen Bleach to Remove Remaining Stain

    After the carpet has dried completely, if there are dark stains, use a solution of oxygen bleach and water to treat the discoloration on the surface of the carpet. Follow package directions and repeat until the stains are gone. Keep a fan going to ensure that everything is completely dry between steps. When everything is clean, replace the carpet padding and reinstall the carpet.

    The Spruce / Ana Maria Stanciu

How to Remove Mildew Stains and Odors From Upholstery

  1. Use Anti-Mold Spray

    If the mildew stain is small and manageable, use the same cleaning solutions and techniques recommended for cleaning the carpet. Apply an anti-mold spray to the area, saturating the area. Allow it to dry completely.

    The Spruce / Ana Maria Stanciu

  2. Spot Clean With Oxygen Bleach

    Make an oxygen bleach and water cleaning solution and apply it to the discolored upholstery. Air dry between applications. Repeat until the stains are gone.

    The Spruce / Ana Maria Stanciu

Additional Tips to Remove Mildew Stains and Odor

If the stain or odor does not come out after one or two times trying these steps, continue to repeat the steps. Eventually, these methods will kill and remedy mildew stains and odor. You can also try a few other household materials for a gentler, perhaps slower, attempt at removal:

  • If you don’t use bleach or pine oil to eradicate mold, you can also use hydrogen peroxide. It is less harsh than chlorine bleach. Hydrogen peroxide (3% to 10% solution) will kill mold and lighten stains. It has a bleaching effect but works more slowly than chlorine bleach, has no fumes, and leaves no residue. Test on an inconspicuous spot to ensure you don’t discolor the material.
  • Distilled white vinegar is mildly acidic and can also be used to break down the structure of mold and kill it slowly. Vinegar will eliminate odor but not remove mold stains, so you might need to scrub it away using another household cleaner. 
  • Baking soda, borax, and alcohol are other household ingredients that you can use to inhibit the growth of mold and mildew—although they don’t kill spores.
  • Front-load washers can sometimes develop mold in the door seal, resulting in clothes that smell bad after being washed. Mold growth is often behind the rubber door seals or within the inner washer drum. If you have a front-load washer and your laundry has developed a moldy odor, give your washer a complete cleaning and wash it regularly.

When to Call a Professional

If you’re unsure if you can clean the mildewed clothing article on your own, consult a dry cleaning professional. They may give you more tips or launder the garment for you. If the item that needs cleaning is silk or vintage furniture, consult a furniture cleaning professional to preserve it safely.

The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Basic Facts About Mold and Dampness. Centers For Disease Control and Prevention

Disclaimer: Curated and re-published here. We do not claim anything as we translated and re-published using google translator. All images and Tattoo Design ideas shared only for information purpose.

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