Have you noticed an unpleasant smell or dark spots lurking around your washing machine’s rubber seal? You’re not alone—mould buildup is a common headache for many households.
Not only is it unsightly, but mould can also affect your machine’s performance and even transfer nasty odours onto your clean clothes.
In this article, you’ll find straightforward steps and practical tips to banish mould from your washing machine’s rubber seal—and keep it gone for good.
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How to Get Rid of Mould in Washing Machine Rubber: The Complete Guide
Is there a musty, unpleasant smell every time you open your washing machine door? Have you spotted black or grey stains lurking along the rubber seal? If so, mould has likely made itself at home in your washing machine’s rubber gasket—a common problem, but one that is absolutely fixable with the right approach.
In this comprehensive guide, you’ll learn why mould forms in washing machine rubber seals, how to remove it step by step, and—most importantly—how to keep it from ever returning. Let’s make your laundry routine fresher and healthier!
Why Does Mould Grow on Washing Machine Rubber Seals?
Washing machine rubber seals (or gaskets) are designed to keep water from leaking out during a wash. Unfortunately, this very feature also creates an ideal breeding ground for mould and mildew. Here’s why:
- Warmth: The constant use of warm water provides breathability for mould spores.
- Moisture: Water easily collects in the folds of the seal and doesn’t always dry out.
- Detergent & Residue Build-Up: Leftover soap, fabric softener, and even lint can give mould food to grow on.
- Closed Doors: Many people close the washing machine door after use, trapping humidity inside.
If you notice a dark, musty-smelling patch on the seal, it’s almost certainly mould, and it needs to be dealt with promptly.
Step-By-Step: How to Get Rid of Mould from Washing Machine Rubber
Removing mould from your washing machine’s rubber seal isn’t difficult, but it does take a little elbow grease and the right supplies. Here’s how to tackle the job:
1. Gather Your Cleaning Supplies
You’ll need:
– A pair of rubber gloves (for protection)
– A soft cloth or sponge
– An old toothbrush (for scrubbing)
– A small bowl or spray bottle
– White vinegar, baking soda, or a diluted bleach solution
– For natural cleaning: White vinegar or baking soda
– For stronger cleaning: A solution of 1 part bleach to 4 parts water
Tip: Never mix bleach and vinegar together—they can produce harmful gases.
2. Prepare the Area
- Unplug the washing machine for safety.
- Open the washing machine door wide to expose the rubber seal fully.
- Pull back the rim of the rubber gasket gently to reveal any hidden mould or debris trapped inside the folds.
3. Clean Off The Visible Mould
For Vinegar or Baking Soda Solution:
- Pour white vinegar directly onto the cloth or sponge.
- Wipe the entire rubber seal, pulling back the folds to reach all areas.
- For tough spots, make a paste of baking soda and water, apply it directly, and let it sit for 15 minutes.
- Scrub gently with the toothbrush.
For Bleach Solution:
- Dip a cloth or toothbrush into the bleach solution.
- Carefully scrub all affected areas, paying close attention to black or dark spots.
4. Soak and Wipe Dry
- After scrubbing, let the vinegar, baking soda, or bleach solution sit for 10–15 minutes.
- Wipe away all cleaning solution with a damp cloth.
- Use a dry cloth or towel to thoroughly dry the rubber seal.
5. Run a Hot Wash Cycle
- With the machine empty, run a hot wash (ideally 60°C or higher) using either:
- 1–2 cups of white vinegar (added directly to the drum), or
- Your usual detergent
- This helps flush out any remaining mould spores or residue.
Key Benefits of a Clean Washing Machine Seal
- Prevents Bad Odours: Removes the source of musty smells in your laundry.
- Healthier Home: Reduces exposure to allergens, mould spores, and bacteria.
- Protects Clothes: Avoids black marks or contamination from mould.
- Extends Machine Lifespan: Routine cleaning keeps your washing machine running efficiently.
Common Challenges (and How to Overcome Them)
1. Stubborn, Old Mould Spots
- Some stains might not fully lift on the first try. In this case, repeat the above process or use a dedicated mould remover for washing machines, following manufacturer instructions.
2. Sensitive Skin or Allergies
- Use natural cleaners like vinegar and baking soda for a gentler, more allergy-friendly clean.
- Always wear gloves and keep the area ventilated.
3. Hard-to-Reach Areas
- A soft, flexible toothbrush can help you access tricky folds in the gasket.
4. Persistent Smells
- If odours remain after cleaning, check and clean the detergent drawer and filter too. Sometimes, mould lingers in these areas.
Preventing Mould from Coming Back: Best Practices
Once your washing machine’s rubber seal is mould-free, keep it that way with these practical tips:
After Each Wash
- Wipe Down the seal and the drum with a dry cloth to remove moisture.
- Leave the Door Open for at least 30 minutes to let air circulate and dry out the interior.
Weekly Maintenance
- Check for Lint and Debris: Remove any small items, lint, or detergent build-up from folds in the seal.
- Run a Hot Empty Cycle: Use white vinegar or a machine cleaning product once a week or every fortnight.
Detergent Dos & Don’ts
- Don’t Overload on Detergent: Excess soap leaves residue that feeds mould.
- Use High-Efficiency Detergents if you have an HE machine; they create less foam and rinse away more easily.
Quarterly Deep Clean
- Clean Detergent Drawer & Filter: These can be hidden sources of mould.
- Inspect the Seal: Look for early signs of mould and deal with them promptly.
When Should You Replace the Rubber Seal?
Sometimes, no amount of cleaning will bring a heavily mouldy or damaged gasket back to life. Consider replacing the seal if:
- Black stains penetrate deep into the rubber and repeatedly return
- The rubber feels slimy, cracked, or brittle
- Odours persist despite thorough cleaning
Check your washing machine’s manual or consult a technician for advice on replacing the seal.
Frequently Asked Questions (FAQs)
How often should I clean the washing machine rubber seal?
You should wipe down the seal after every use if possible and do a thorough cleaning monthly. Regular cleaning keeps mould from getting a foothold.
Is it safe to use bleach on washing machine rubber?
Yes, diluted bleach is effective for killing mould, but always dilute it (1 part bleach to 4 parts water) and rinse thoroughly. Never mix bleach with other cleaners and always ventilate the area.
Can I prevent mould just by leaving the door open?
Leaving the washing machine door open after each wash is a great habit. It lets air circulate, drying out the machine and preventing mould. However, wiping away lingering moisture and cleaning regularly is still necessary.
Should I use commercial washing machine cleaners?
Commercial cleaners are designed to remove mould and residue safely. They can be very effective and convenient but are often best used alongside regular manual cleaning of the rubber seal.
What if mould keeps returning even after cleaning?
If mould is a constant problem, check for other sources of moisture, avoid using excess detergent, and consult your washing machine’s manual for specific cleaning guidance. If the seal is very old or damaged, replacement may be the only solution.
With regular care and the simple steps outlined above, your washing machine will stay fresh, mould-free, and ready to deliver spotless laundry every time. Happy cleaning!