Best Way to Clean Moldy Carpet

If your carpet was wet and not dried promptly, mould may form. Green, brown or black mould spots on carpet are not only unsightly but can also have adverse health effects. It is important to clean mouldy carpet promptly so the mould doesn’t spread further. The best way to clean mouldy carpet is with sudsy dish soap and water. Applying a homemade mould killer to the carpet after cleaning will help to ensure all the mould spores are gone.

Vacuum the carpet thoroughly to remove any loose mould. Empty the vacuum bag or canister outdoors promptly after vacuuming.

Pour 2 cups of cool water into a large mixing bowl. Add 1 tbsp liquid washing powder. Mix the solution vigorously with a whisk to form thick soap suds.

Dampen a rag with water. Scoop some soap suds from the bowl with the damp rag.

Dab the mouldy carpet with the rag and soap suds. Tamp the carpet with the rag, applying more soap suds as necessary, until the mould is gone. Switch to clean portions of the rag frequently to avoid reapplying the mould to the carpet.

Rinse the carpet with a rag and clean water. Blot the area with a dry rag to remove any excess moisture.

Pour some distilled white vinegar into a clean, empty spray bottle. Lightly spray the affected area of the carpet with the vinegar. Let the vinegar sit on the carpet without rinsing to effectively kill the mould.


Mix 2 cups of water with 2 tsp of tea tree oil and spray it onto the carpet as a substitute for the vinegar. Let the tea tree oil mixture sit on the carpet without rinsing to kill any remaining mould.

Things You'll Need

  • Vacuum cleaner
  • Water
  • Large mixing bowl
  • 1 tbsp liquid washing powder
  • Whisk
  • Rags
  • Distilled white vinegar
  • Empty spray bottle
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About the Author

Kimbry Parker has been writing since 1998 and has published content on various websites. Parker has experience writing on a variety of topics such as health, parenting, home improvement and decorating. She is a graduate of Purdue University with a Bachelor of Arts in organizational communication.