Black mould in your washing machine is not only unsightly but can also lead to unpleasant odours and potential health concerns. If you’ve noticed dark spots around the rubber seals, detergent drawer, or drum, it’s time to take action. Thankfully, cleaning black mould from your washing machine isn’t as daunting as it sounds, and at OG Electrical Services, we have written this Blog Post to guide you on a DIY process.
Why Does Black Mould Form in Washing Machines?
Washing machines provide the perfect breeding ground for mould due to the combination of moisture, warmth, and detergent residues. Front-load washing machines are particularly susceptible because water tends to collect in the rubber door seals and detergent drawers. Neglecting to air out your machine or clean it regularly can exacerbate the problem.

What You’ll Need:
- White vinegar
- Baking soda
- Dishwashing liquid
- Old toothbrush or scrubbing brush
- Microfiber cloth
- Rubber gloves
- Spray bottle
Step-by-Step Guide to Cleaning Black Mould
1. Inspect the Affected Areas
Identify where the black mould has formed. Common areas include:
- Rubber door seals
- Detergent drawer
- Inside the drum
2. Clean the Rubber Seal
The rubber seal around the door is a hotspot for mould. Follow these steps:
- Put on rubber gloves to protect your hands.
- Mix equal parts white vinegar and water in a spray bottle.
- Spray the solution generously onto the mouldy areas of the seal.
- Let it sit for 10-15 minutes to loosen the mould.
- Use an old toothbrush to scrub the seal, ensuring you reach into the folds.
- Wipe away the loosened mould with a damp microfiber cloth.
3. Remove and Clean the Detergent Drawer
The detergent drawer often collects detergent residue and moisture, which can encourage mould growth:
- Remove the drawer (refer to your machine’s manual if unsure how).
- Soak it in a sink filled with warm water and dishwashing liquid.
- Use the toothbrush to scrub away mould and detergent buildup.
- Rinse thoroughly and dry before reinserting it.
4. Clean the Drum
Even if mould isn’t visible in the drum, it’s a good idea to disinfect it:
- Sprinkle 1/4 cup of baking soda directly into the drum.
- Pour 2 cups of white vinegar into the detergent drawer.
- Run a hot wash cycle (ideally at 60°C or higher) without any laundry.
- Once the cycle is complete, wipe down the drum with a dry microfiber cloth.
5. Clean the Filter
The filter can also harbor mould and debris:
- Locate and remove the filter (consult your manual if needed).
- Rinse it under warm water and scrub away any visible mould.
- Reinsert the filter once it’s clean and dry.
Preventing Black Mould in the Future
To keep your washing machine mould-free, adopt these simple habits:
- Leave the door open: After every wash, leave the door and detergent drawer slightly open to allow air circulation and reduce moisture buildup.
- Wipe down the seals: After a wash, dry the rubber seals with a clean cloth to remove excess moisture.
- Use the right detergent: Excess detergent can cause residue buildup, which promotes mould growth. Use the recommended amount for your machine.
- Run regular maintenance washes: Once a month, run an empty hot wash with white vinegar or a commercial washing machine cleaner.
- Clean the detergent drawer and filter regularly: Make this a part of your monthly cleaning routine.
Conclusion
So there we go, with a little effort and regular maintenance, you can restore your appliance to a fresh, mould-free state. If the mould problem persists despite regular cleaning, or if your washing machine has a persistent odor that won’t go away, then it is time to call the experts, OG Electrical Services. We will thoroughly inspect and clean your machine to ensure it’s operating at its best.
OG Electrical Services is a Domestic and Commercial Electrical services company that specialises in Appliance Installation, Maintenance and Repairs, including general electrical repair work. We install, fix and service all brands and types of electrical appliances.
The number to use is +27 73 378 6966 and email info@ogelectrical.co.za
Read more about our Washing Machine repair services on the following link https://www.ogelectrical.co.za/washing-machine-repairs/