How to get rid of mildew odors from walls

Written by mary ylisela Google
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How to get rid of mildew odors from walls
Similar to other household surfaces, your walls need to be cleaned, too. (closeup of livingroom image by Melking from

A musty, dank smell coming from your walls is typical of mildew odour. Where there's mildew smell, there's usually mildew spores as well. Left unattended, walls that simply smell of mildew can develop mildew spores on the exterior of the wall as well as the interior. Rampant mildew growth can be dangerous to you and your family but is easily avoidable with cleaning and regular maintenance.

Skill level:

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Things you need

  • Bucket
  • 1 cup bleach
  • Rubber gloves
  • Clean cloths
  • White vinegar

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  1. 1

    Pour 1 cup household bleach into a bucket with 1 gallon warm water. Stir the solution to mix.

    How to get rid of mildew odors from walls
    Carrying your wall-cleaning solution around in a bucket makes cleaning more convenient. (bucket image by Aleksandr Ugorenkov from
  2. 2

    Wear rubber gloves to protect the skin on your hands and arms from getting dried out from the bleach.

    How to get rid of mildew odors from walls
    Bleach can irritate dry and sensitive skin. (medical gloves image by sasha from
  3. 3

    Soak a clean cloth in the bleach solution, then squeeze out the excess liquid. Wash down your walls where mildew odour exists. The diluted bleach will kill any existing mildew spores while removing the accompanying odour.

  4. 4

    Allow your walls to air-dry. Open windows, when possible, to circulate fresh air in order to aid the drying process and remove strong bleach smell.

  5. 5

    Remove lingering mildew odour on your walls with white vinegar poured onto a clean cloth. Wipe the smelly surface with the vinegar-soaked cloth, then let it air-dry.

Tips and warnings

  • Fresh air from open windows helps deodorise your walls and the rest of the room.
  • Run a dehumidifier in damp, musty rooms to remove excess humidity. This helps get rid of mildew odours.
  • Place a bowl of activated charcoal in the room with mildew-smelling walls. Leave it there overnight to absorb the odours.
  • If mildew odour persists after all of your cleaning and odour-removing efforts, call a specialist to make sure mildew hasn't got into the insides of the walls.

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