Mould on Clothing, Shoes, and Soft Furnishings: What Can Be Saved and What Cannot

Finding mould on clothing, shoes, or upholstered furniture is a particularly upsetting discovery, these are personal, often expensive items, and unlike a mould-stained wall, you cannot simply repaint them. The Illawarra’s coastal humidity makes this problem common, particularly in houses with poor wardrobe ventilation, south-facing bedrooms, or recurring mould issues in enclosed storage spaces. This guide explains how to assess what can be salvaged, the correct cleaning approach for different materials, and, critically, how to ensure the underlying mould problem in the room is addressed so items do not become recontaminated. See also our guide on mould in built-in wardrobes.

Quick Answer (BLUF)

Washable fabrics can often be salvaged if mould is surface-only and the item is laundered promptly in hot water with a mould-killing additive. Leather, suede, and heavily contaminated items may be unrecoverable. But salvaging individual items is pointless if the wardrobe or room where they are stored still has active mould, you must address the source first.

Why Soft Furnishings Are Particularly Vulnerable

Fabric, leather, and soft materials are excellent substrates for mould because they:

• Retain moisture and allow it to persist longer than hard surfaces
• Provide cellulose (cotton, linen), keratin (wool, silk), or synthetic polymers as a food source
• Have porous, textured surfaces that trap spores and make thorough cleaning difficult
• Are often stored in enclosed spaces (wardrobes, under beds, in boxes) where air circulation is minimal

In the Illawarra, the problem is amplified by:

• High ambient humidity year-round, particularly in coastal suburbs from Thirroul to Port Kembla
• Homes with limited cross-ventilation and small enclosed wardrobes
• Seasonal wardrobe changeovers where summer items are stored in compressed bags or boxes in cool areas and retrieved six months later covered in mould

Assessing Each Item

Before attempting to clean anything, assess the extent of contamination:

Likely salvageable:

• Light surface mould (white or grey powdery residue) on washable fabrics
• Mould on the surface only of leather or suede items, no deep staining or permeation
• Soft furnishings with removable, washable covers (cushion covers, throw pillows with detachable covers)

May be salvageable with professional cleaning:

• Moderately mould-affected wool coats, jackets, or heavily constructed garments
• Leather shoes or bags with moderate surface mould
• Upholstered furniture with localised surface mould that has not penetrated the foam

Likely beyond saving, consider disposal:

• Items with mould growing through the fabric to both faces
• Items with a strong musty odour that persists after initial cleaning
• Compressed foam cushions or mattresses with visible mould on the interior foam
• Heavily mould-stained items where staining covers more than 20-30% of the surface
• Items stored in a severely mould-contaminated space for a prolonged period, the spore load embedded in fibres may be impossible to eliminate

Cleaning Washable Fabrics

For clothing and washable items with surface mould:

1. Take items outside before shaking, brushing, or treating, do not agitate them inside the house, as this spreads spores.
2. Brush off loose mould with a stiff clothes brush outdoors. Bag and bin the brushing residue.
3. Pre-treat with white vinegar or a borax solution (½ cup borax dissolved in 1L hot water), apply to affected areas and leave 30 minutes.
4. Wash in the hottest water safe for the fabric, 60°C kills most mould. Check the care label. Add ½ cup of borax or a mould-specific laundry additive to the wash.
5. Dry in full sun, UV is an effective natural mould killer. Do not tumble dry until you have confirmed the mould smell has gone after washing, otherwise you may bake the smell in.
6. Inspect after drying, if staining persists after two washes, the mould has penetrated the fibre. The item is likely beyond salvage by home methods.

Cleaning Leather and Suede

Leather is more complex, it can be damaged by water immersion and by many cleaning agents:

1. Take the item outdoors and brush off surface mould with a soft brush.
2. Wipe down with a cloth dampened with isopropyl alcohol (70%), test on a hidden area first.
3. Allow to dry fully in a well-ventilated (but not sun-direct) spot, direct sun can crack leather.
4. Once dry, apply a leather conditioner to restore moisture stripped by the alcohol.
5. For suede: use a specialist suede brush and a suede eraser. Suede damaged by moisture and mould often cannot be fully restored.

For expensive leather goods (handbags, dress boots, leather jackets), a professional leather cleaning service is worth the cost before writing the item off.

Cleaning Soft Furnishings

Upholstered chairs, sofas, and curtains with surface mould:

1. Take removable covers off and launder as per the fabric guide above.
2. For fixed upholstery, apply a fabric-safe antifungal spray and allow dwell time, then blot clean with a white cloth. Do not saturate, moisture in foam takes days to dry and worsens the problem.
3. Consider professional upholstery cleaning for significant contamination, industrial extraction cleaning removes far more than surface wiping.
4. A professional antifungal fogging treatment of the whole room is effective at reducing spore counts in fabric that cannot be easily laundered.

Address the Room Before Returning Items

Returning clean items to a room that still has active mould guarantees recontamination. Before clothes go back in:

• Inspect and treat the wardrobe walls, shelves, and back panel, see our built-in wardrobe mould guide
• Confirm the moisture source (condensation from an exterior wall, leaking wall above) is fixed
• Improve wardrobe ventilation, louvred doors, a small gap at the back wall, a desiccant dehumidifier in the wardrobe
• Consider a professional mould inspection if the wardrobe is repeatedly affected

FAQs

Can mould on clothes make you sick?

Wearing mould-contaminated clothing can trigger skin irritation, rashes, and exacerbate respiratory symptoms, particularly in people with mould allergies or asthma, which are prevalent in the Illawarra. It is not recommended to wear or use items that smell musty even after washing.

How do I stop mould growing in my wardrobe during Wollongong summers?

Desiccant hanging dehumidifiers (rechargeable or disposable) placed inside wardrobes absorb moisture and significantly reduce the humidity level inside the enclosed space. Replace or recharge every 4-8 weeks during summer. Ensure clothes are fully dry before hanging.

Should I keep the wardrobe door open or closed to prevent mould?

In a humid coastal Illawarra home, the answer depends on the room. If the bedroom itself is well-ventilated, leaving the wardrobe door ajar allows air circulation and reduces humidity buildup inside. If the bedroom is itself very humid (poor cross-ventilation, no exhaust), keeping the door closed with a desiccant inside may perform better.

Can a fogging treatment clean mould out of clothes?

Fogging treatments are more effective on hard surfaces than on dense fabric. They can reduce spore counts on hanging clothes but will not remove staining or deep mould growth. Washable items should still be laundered after fogging.