remove mould with borax

Remove Mould on Fabric With Borax

Posted on August 19 2026

Mould and mildew can be a persistent problem, leaving fabrics stained, musty and weakened over time. Borax is a naturally occurring mineral compound with alkaline and antifungal properties that can help tackle mould and mildew on washable fabrics, while also helping to lift stains and neutralise musty odours.

Borax, also known as sodium borate contains sodium, boron, oxygen and water molecules. Borax is useful for tackling mould because borate compounds can inhibit the growth of fungi and help prevent mould from reproducing.

Here's What You Need:

1 Cup Green Goddess Premium Borax

4L Water

Bucket and Gloves (optional)

Soft-bristle brush

Method

Before using borax, test it on an inconspicuous area of the fabric to ensure that it doesn't damage or discolour the material.

Mix 1 cup of borax powder with 4 litres of hot water in a bowl or bucket (you can adjust the measurements depending on the amount of clothing/fabric you're treating). Stir the solution until the borax is completely dissolved.

If the mould-infested clothes or net curtains are heavily soiled, brush off any loose mould spores or debris before treating them with borax.

Wear gloves if desired and submerge the affected fabric in the borax solution, ensuring that all parts of the fabric are fully soaked.

Allow to soak for several hours or overnight. This will help to loosen and kill the mould and mildew.

After soaking, use a soft-bristle brush or sponge to gently scrub the mouldy areas of the fabric. Be careful not to scrub too vigorously, as this could damage the fabric.

Rinse the clothes thoroughly with clean water to remove any residual borax and mould.

If there is still mould present repeat the process. Wash and dry as usual.

You can also use this solution on furniture fabric (again do a test spot first) apply, leave and then brush gently, sponge off with warm water and leave to dry.

Remember that prevention is key to avoiding mould growth in the future. Make sure your clothes are thoroughly dried before storing them, especially in humid environments, and keep your closet and storage areas well-ventilated.