How to remove mould from your washing machine drawer – and stop it coming back

That small patch of mould in your washing machine drawer does more than look unpleasant: it can gradually contaminate the machine, taint freshly washed laundry and even affect the air inside your home. Dealing with it promptly, using the right method, and adopting a few low-effort habits will stop it returning.

Why mould thrives in the detergent drawer

The detergent drawer is almost perfectly designed for mould growth. After each wash it stays wet for hours, it traps tacky residue from detergent and fabric softener, and many of us shut it immediately once the cycle ends. Limited airflow plus ongoing moisture and soap build-up is classic mould-friendly territory.

Mould in the drawer isn’t only unsightly; it can influence both the air in your home and the clothes you put on.

As mould develops, it releases microscopic particles known as spores. For people who are sensitive, spores may lead to sneezing, a runny nose, red or itchy eyes and, in some cases, skin irritation. In particularly humid homes, some people also notice blocked sinuses, coughing or a stinging sensation in the eyes.

Once mould takes hold in the drawer, rinse water can transport spores further into the appliance. Over time they may reach hoses, the rubber door seal, and can even circulate into the air in a small utility room. If washing looks clean but comes out with a musty smell, the problem is often the neglected drawer rather than the drum.

Safety first: the one cleaning error to avoid

It’s tempting to reach for the harshest products, but that confidence can backfire. A common and risky mistake is combining bleach with acidic cleaners such as vinegar. Mixed together, they can produce chlorine gas, which can irritate your eyes, nose and throat even at relatively low levels.

Never combine bleach and vinegar. Use one cleaner at a time and make sure the area is well ventilated.

Before you start, open a window or turn on an extractor fan. If you have reactive skin, wear rubber gloves. The cleaning itself is straightforward; the real danger comes from mixing chemicals rather than from the scrubbing.

How to remove the washing machine drawer without damaging it

If you’ve never taken the drawer out before, it may feel as though it’s fixed in place. On most modern machines it’s removable, usually via a small safety catch halfway along the runner-sometimes labelled “Push” or highlighted in a contrasting colour.

Pull the drawer out as far as it will go and locate that catch. Keep the drawer straight with one hand to prevent twisting. With the other hand, press the catch and slide the drawer directly towards you. It should come free without force. If it won’t budge, double-check you’re fully depressing the catch and try again with a level, straight pull rather than lifting upwards.

Washing machine drawer mould: a seven-step clean using vinegar and soapy water

White vinegar is widely used at home for odours and soap build-up. Its impact on mould differs by species, but as a cleaning helper it’s very effective at softening residue and freshening the surfaces you can reach.

Step-by-step method

• Fill a bowl or sink with lukewarm water and a squirt of washing-up liquid.
• Pour in about two cups of white vinegar (roughly 480 ml).
• Submerge the drawer and leave it to soak for 5–10 minutes.
• Scrub the broad areas and corners with a sponge, focusing on places where detergent paste tends to cling.
• Use an old toothbrush for tracks, channels, grooves and tight recesses.
• Rinse well with clean water. Hold the drawer up to the light; if you still spot dark marks, scrub those areas again.
• Dry thoroughly with a cloth, then leave the drawer out to air for a short time before reinstalling it.

It seems fiddly until you do it-then the improvement in freshness is noticeable straight away.

In most cases, the whole routine takes under 20 minutes, yet it can make a dramatic difference to odour-especially in smaller homes where the washing machine is located in a hallway or kitchen.

Extra tip (to prevent residue coming back)

If you regularly see thick, sticky deposits, consider slightly reducing how much detergent and softener you use. Overdosing leaves a film that gives mould and bacteria more to cling to, particularly inside the drawer channels.

What experts say about moisture control

Mould professionals tend to agree on a clear guideline: damp areas should be dried within 24 to 48 hours. Once moisture lingers beyond that, mould finds it much easier to establish itself. A washing machine and its components are no exception.

Area	Drying target	Risk if left wet
Detergent drawer	Fully dry between wash days	Mould patches and stale odours
Door seal	Wiped after heavy washes	Black spots and slime build-up
Floor around machine	Puddles dried in under 48 hours	Hidden damp, mould on skirting and walls

Manufacturer-approved habits that genuinely help

Most manufacturers promote one surprisingly simple habit: give the machine space to dry out. After the programme finishes, leave both the door and the detergent drawer slightly open instead of closing them immediately. That small gap allows moisture to escape rather than sitting trapped in darkness.

They commonly also recommend a monthly deep clean of the drawer and a quick inspection of the rubber seal. It’s basic, but it targets the three things mould relies on most: moisture, residue and low light.

Quick daily habits to stop the musty smell

• Leave the door and drawer ajar after each wash: prevents pockets of warm, humid air from stagnating.
• Clean the drawer once a month: less residue means fewer surfaces for mould to latch on to.
• Dry splashes and small puddles within 24–48 hours: standing water increases mould risk.
• Use less detergent and softener: excess product leaves a sticky coating on internal parts.

A helpful maintenance wash to reduce hidden build-up

If your machine allows it, running an occasional hotter “maintenance” cycle (check your manual) can help reduce internal residue that feeds biofilm and odours. This won’t replace cleaning the drawer, but it can support it-especially if you mostly wash at low temperatures.

When mould returns quickly

If you clean the drawer and fresh mould appears again within a few days, something is staying damp. First, check whether water is pooling in the compartment after a wash. A partial blockage in the cavity where the drawer sits can prevent proper drainage.

Also inspect the door seal and the area around the drawer opening. If they feel consistently damp or slimy, airflow is inadequate. In many situations, simply identifying the part that never fully dries-and then improving ventilation or drying it more thoroughly-breaks the repeat cycle.

When to use stronger products or bring in professional help

For mild, surface-level mould in the drawer, vinegar and soapy water is usually sufficient. If patches are stubborn and keep returning across multiple parts of the machine, a specialist washing machine cleaner or a household product labelled for mould may be appropriate-used strictly according to the instructions.

If the room smells strongly musty even when the machine is switched off, or you can see mould spreading to nearby walls or skirting boards, the issue may extend beyond the appliance. Ongoing damp behind or underneath the machine can harm flooring and plaster. In that scenario, a plumber or damp specialist can check for slow leaks, drainage problems or concealed water damage.

Helpful concepts: spores, biofilm and indoor air quality

Three ideas make it easier to understand why a few dark marks in a drawer matter:

• Spores: mould doesn’t simply sit on the surface; it releases microscopic particles that drift through the air. Spores are what you breathe in, and they also help new patches form elsewhere.
• Biofilm: the slippery coating inside drawers and seals is often a mixture of detergent residue, mineral deposits and microbes. Once biofilm forms, it can shelter mould and bacteria, making them more difficult to remove. Routine scrubbing disrupts this protective layer and leaves surfaces less inviting.
• Indoor air quality: one small patch of mould in a drawer is unlikely to cause serious harm to a healthy person, but in a tightly sealed home with several damp areas, the combined effect can become noticeable. Households with asthma, allergies or babies may find that airing the drawer and drying seals improves comfort gradually but meaningfully.

Looked at this way, cleaning the washing machine drawer isn’t just cosmetic. It’s a practical step towards a drier, less stuffy home-and laundry that genuinely smells clean when it comes out of the drum.