Removing Mould from Clothes and Fabric
Mould on clothing and fabric is an unfortunately common discovery in Ontario homes — particularly in the spring after a winter where humidity was poorly managed, or in damp spaces like basements, laundry rooms, or packed storage areas. The approach depends on how far the mould has progressed and the fabric involved.
Immediate Response
Take mouldy items outside immediately — shaking or brushing mould indoors releases spores throughout the home. Brush off surface mould outdoors, then immediately launder. Do not leave mouldy fabric items sitting — mould continues to grow and deepen into fibres over time.
Washing Mouldy Items
For machine-washable items: wash in the hottest water the fabric can tolerate (check the care label). Add 1 cup of white vinegar or sodium percarbonate (oxygen bleach) to the wash — both are effective at killing mould without damaging most fabrics. Chlorine bleach works on white cotton but should never be used on colours or delicates. Run a second wash if any musty smell remains after the first.
Dry in the sun if possible — UV light kills remaining mould spores and provides natural bleaching. Do not dry mouldy items in a dryer if the mould smell persists — the heat sets the odour.
When to Discard
Mould that has been growing for an extended period penetrates deep into fabric fibres — particularly in natural fibres like cotton and wool. If the mould staining or musty smell remains after two washing attempts, the item is unlikely to be salvageable. Discard rather than continuing to wash and risk spreading spores.
Preventing Recurrence
The root cause is excess moisture — in storage areas, laundry rooms, or closets. Address the source: a dehumidifier in the basement or storage area, improved ventilation in the laundry room, and ensuring clothes are fully dry before storing (even slightly damp fabric in an enclosed space will mould within days).