How to Clean Your Washing Machine Seal with Vinegar

The smell was the first warning. Rather than the reassuring scent of freshly washed cotton, a sour, damp odour escaped whenever the washing machine door was opened. It is that brief moment of doubt: are the clothes responsible, or is the appliance itself the problem? In this case, it was the machine - specifically, the rubber seal around the door. That innocent-looking grey ring gradually gathers water, detergent residue and, eventually, something far less harmless.

One evening, after taking out yet another load that was clean but did not smell quite right, a friend shared a simple “trick”: pull back the seal with your fingers. Beneath the fold sat a dark film and tiny specks of mould, resembling the rim of a neglected pond.

That was when white vinegar came into the picture.

Why a washing machine seal can harbour mould

Few people consider washing machines to be items that need cleaning: after all, they are the appliances that clean everything else. It can therefore feel rather unfair to discover that the soft rubber door seal may be quietly growing mould. You add detergent, fabric conditioner and perhaps even scent boosters, yet the washing still emerges with a faint smell somewhere between wet dog and a changing room.

The cause is often hiding inside the seal itself. Its dark, damp folds are ideally shaped for holding onto water and lint. Over time, they turn into a small concealed ecosystem - and a particularly smelly one.

One reader said she spent months replacing detergents, testing eco pods and changing fabric conditioners in an attempt to remove a sour smell from her towels. Nothing made a difference. Then, while watching cleaning videos one Sunday, she saw someone pull back a washing machine seal and scrub it with vinegar. Intrigued, she gave it a go.

She combined warm water and white vinegar in a bowl, soaked an old cloth in the mixture and wiped well inside the folds. The cloth turned grey, then brown and finally almost black. On her next wash, using the same towels and detergent, the smell was entirely different. The unpleasant odour had not been in the laundry at all; it had been living in the seal.

This is what happens out of sight. Every wash leaves minute traces behind: detergent, fabric conditioner, dirt, skin cells and pet hair. They become lodged in the rubber folds, keeping moisture close to the surface while feeding mould and bacteria. Although the machine spins and drains, the seal does not properly dry out.

White vinegar acts as a mild acid. It helps loosen soap scum, break down mineral deposits and create conditions that mould does not favour. Unlike more aggressive chemicals, it does not leave a powerful artificial fragrance lingering in the drum. Instead, it tackles the source of the problem. Cleaning the seal with vinegar therefore does more than simply disguise an odour: it alters that hidden ecosystem.

How to clean a washing machine seal with vinegar

Keep the process straightforward. There is no need to set aside an entire afternoon, buy a complicated collection of tools or order another internet gadget. Mix equal quantities of warm water and white vinegar in a small bowl. You will also need a soft cloth or microfibre towel, plus an old toothbrush you no longer need.

Open the washing machine door and carefully draw back the rubber seal using your fingers. Take your time, as there will be small pockets and creases to inspect. Soak the cloth in the vinegar solution and clean every surface you can see. Use the toothbrush on stubborn dark marks or dried-on residue. When you have finished, run a short empty hot wash with a cup of vinegar placed in the drum. Your machine has effectively had a deep breath.

This is an easy job to put off. It can seem fiddly, mildly unpleasant and oddly personal - you are quite literally reaching into the concealed corners of a household appliance. Everyone knows the thought: “I’ll deal with this next weekend”, only to find that three months later the smell has become worse.

Realistically, nobody carries this out every day. Perfection is not the aim, and cleaning the seal twice a month is already a major improvement for most machines. A common mistake is to wait until the odour becomes overwhelming. Once you can smell it every time you walk past the utility room, the mould is likely to be well established. A quick, regular wipe with vinegar can avoid that situation.

Cleaning expert Marie, who has serviced machines for over a decade, told me: “People panic when their washer smells, but nine times out of ten, the problem is sitting right there in the seal. Vinegar and a cloth solve what expensive detergents never touch.”

• Frequency
  Wipe the seal using a cloth dampened with vinegar every 2–4 weeks.
• Vinegar mixture
  Use approximately 50% white vinegar and 50% warm water to keep the treatment gentle on the rubber.
• Extra tools
  Keep an old toothbrush for the creases, then use a dry cloth to pat the seal dry at the end.
• Drying habit
  Leave the door slightly ajar after every wash so that the seal can dry naturally.
• Bonus care
  Once a month, run an empty hot cycle with a cup of vinegar in the drum to clean less visible areas.

A simple habit that changes how your home feels

Cleaning a washing machine seal with vinegar is not glamorous, and it is unlikely to earn compliments over dinner. Still, this small and almost unseen task affects how your home smells, how your clothes feel on your skin and how much confidence you have in your appliances. There is something reassuring about identifying the origin of an odour and knowing that a bottle of vinegar, costing less than a coffee, can deal with it.

This modest routine can also encourage other useful habits: keeping the door open between cycles, using slightly less detergent and paying attention when the machine begins to sound tired. You are not merely tackling mould; you are taking back a space that ought to feel clean rather than questionable.

Perhaps that is the real point of the washing machine seal. It is not about achieving perfection, but about noticing what is usually hidden and making a gentle change, one quiet wipe at a time.

Key point	Detail	Value for the reader
Regular seal cleaning	Clean the rubber with a vinegar solution every 2–4 weeks	Prevents mould building up and stops laundry developing a musty smell
Use of white vinegar	A mild acid that dissolves soap scum and residue without harsh chemicals	Affordable, widely available and safe for most machines when diluted
Drying habits	Leave the door slightly open and pat the seal dry after washing	Cuts down moisture, slows mould growth and helps the seal last longer

FAQ

• How often should I clean my washing machine seal with vinegar?
  For most households, every 2–4 weeks is enough. If you wash daily, have pets, or live in a humid climate, weekly gentle wipes can help keep smells away.

• Can vinegar damage the rubber seal?
  Used diluted (about 50% vinegar, 50% water) and not left soaking for hours, white vinegar is generally safe. The key is wiping, not immersing the seal in pure vinegar long term.

• What if the mold stains don’t disappear completely?
  Some older stains may stay slightly discolored even when the mold is dead. The main goal is to remove active growth and smell. If the rubber is cracked or deeply damaged, the seal might need replacing.

• Is vinegar enough, or do I need bleach too?
  Vinegar is usually enough for regular maintenance and mild mold. For very heavy, long-term infestations, some people use a targeted cleaner, but that should be occasional, with good ventilation and care.

• Does this also work for top-loading machines?
  Top-loaders often have a different style of gasket, but the idea is similar. Check around the lid, under the rim, and any rubber edges. Wipe with diluted vinegar where you see residue or moisture collecting.