How to Remove Stains from a Washing Machine Drum: Complete Guide

Brown stains, rust marks, or black spots in your washing machine drum are unsightly — and can transfer onto your clothes. Here's how to identify the cause and effectively clean your washing machine drum.

What Causes Stains in a Washing Machine Drum?

Rust Stains (Orange/Brown Marks)

Rust stains are usually caused by worn or chipped drum paddles (the fins inside the drum), damaged drum holes, or rusty items accidentally left in pockets (coins, pins, hairpins). Rust stains can transfer orange marks onto white or light-coloured clothes.

Black Mould Spots

Black spots in the drum or on the rubber door seal (gasket) of front loaders are caused by mould and mildew. This is very common in front loaders that are kept closed between washes, allowing moisture to remain. It can cause musty smells and dark stains on clothes.

Limescale and Mineral Build-up

In areas with hard water, minerals can build up inside the drum as a white or grey residue. Sydney's water is moderately hard, so this can be an issue over time.

How to Remove Rust Stains from the Drum

Try a commercial rust remover safe for appliances. Apply it to the affected area, let it sit for 10–15 minutes, then wipe clean and run an empty wash cycle. For mild rust, a paste of baking soda and water scrubbed gently with a soft cloth can help. Important: Check the drum paddles and drum holes for any sharp edges or chips that caused the rust — these need to be repaired or the staining will return.

How to Remove Black Mould from the Drum and Door Seal

Mix equal parts white vinegar and water in a spray bottle. Spray the inside of the drum and the rubber door seal thoroughly. Leave for 30 minutes. Wipe clean with a microfibre cloth, paying special attention to the folds of the door seal. Run an empty hot cycle (60°C if available) to sanitise. For stubborn mould on the door seal, use a small amount of diluted bleach (1 tablespoon per litre of water), apply with a cloth, leave 10 minutes, then wipe and rinse thoroughly.

How to Remove Limescale Build-up

Run an empty hot cycle with 500ml of white vinegar or a commercial descaling product designed for washing machines. This dissolves mineral deposits and freshens the drum.

Preventing Future Staining

To prevent mould: always leave the door ajar after a wash to allow the drum to dry. Run a hot maintenance wash once a month. Clean the door seal regularly. To prevent rust: check pockets before washing to remove metal items. Inspect drum paddles annually for chips or damage.

Need a New Washing Machine in Sydney?

If your washing machine drum is badly rusted or mould-damaged and beyond repair, Oceania Appliances has certified refurbished washing machines with 3-month warranty and free delivery across Sydney.