If your washing machine has started leaving clothes with a faint musty smell, or you’ve noticed black spots around the drum seal or dark flecks on washed clothes, the drum needs a clean. This isn’t a sign of a broken machine — it’s normal buildup that happens in every washer over time, and it takes about 30 minutes to fix properly. Here’s exactly how to clean a washing machine drum, remove the black bits and bad smell, and prevent both from coming back.
Why washing machine drums get dirty
Three things accumulate inside every drum over time: detergent residue, fabric softener film, and moisture. In India’s humid climate, this combination creates ideal conditions for mould and mildew — particularly in front-loaders, which have a rubber door seal that traps water between washes. The “black bits” that appear on clothes are almost always fragments of this mould or detergent scale breaking off the drum walls or seal. The musty smell is the same mould and bacteria releasing odours during a wash cycle. Running a cold or short cycle repeatedly without maintenance speeds this up significantly.
What you need
- White vinegar (2 cups) — the most effective and readily available cleaner
- Baking soda (half a cup) — works well alongside vinegar
- OR a drum-cleaning tablet (Affresh, Eco Clean, IFB Essentials, or your machine brand’s own tablet) — simplest option
- Old toothbrush for the seal and dispenser
- Microfibre cloth
- Shallow tray and old towel (for the drain filter)
How to clean a front-load washing machine drum
- Check the drum is empty. Remove all clothing and items.
- Clean the rubber door seal first. This is where most of the mould lives. Peel back the seal and look inside the fold — you’ll likely find dark residue, lint and water pooling there. Spray or wipe with a 1:1 mix of white vinegar and water, scrub with an old toothbrush, and wipe clean with a cloth. If there’s heavy black mould on the rubber, use a diluted bleach solution (1 part bleach to 4 parts water) and scrub thoroughly.
- Clean the detergent drawer. Pull it out fully (most lift up and out) and wash it under a tap with a toothbrush. Residue builds up in the compartment behind it — wipe it out with a damp cloth.
- Run a drum clean cycle. Most modern LG, Samsung, IFB and Bosch front-loaders have a dedicated Tub Clean or Eco Drum Clean programme — use it. If yours doesn’t, select the hottest available wash (60°C or above) with an empty drum. Add either: a drum-cleaning tablet directly into the drum, or 2 cups of white vinegar in the detergent drawer plus half a cup of baking soda in the drum. Let the cycle complete fully.
- Run a rinse cycle. After the cleaning cycle, run one plain rinse cycle to flush out any residue from the cleaning agents.
- Clean the drain pump filter. The filter at the bottom front catches lint, coins and debris and should be cleaned every 2–3 months. Open the small flap, place a tray underneath, unscrew slowly (water will spill), remove and rinse the filter, then reseat it.
- Leave the door open. After every wash — and after cleaning — leave the door ajar for at least an hour so the drum and seal can dry out.
How to clean a top-load washing machine drum
- Check the drum is empty.
- Fill the drum with the hottest water setting and add 2 cups of white vinegar (or a drum-cleaning tablet). Let it agitate for a few minutes, then pause and let it soak for 30–60 minutes if your machine allows.
- Complete the full cycle and let it drain.
- Run a second cycle with half a cup of baking soda for a final scrub and deodorise. On machines with an agitator (the central peg), check its base for accumulated black residue — some agitators can be unscrewed and cleaned separately.
- Wipe down the lid and inner rim with a vinegar-dampened cloth, including the underside of the lid where residue collects.
- Leave the lid open after every wash to let the drum air out.
Dealing with black bits on clothes
Black flecks or grey bits coming off on clothes during a wash cycle are almost always fragments of mould or detergent scale from the drum walls or seal. After doing a full drum clean as above, run one or two empty hot cycles before washing clothes again — this flushes out any loosened debris. If the flecks persist after two or three clean cycles, the rubber door seal may have extensive mould that needs replacing. Check the seal closely: if the black is embedded in the rubber and won’t scrub off, a replacement seal (available for most LG, Samsung, IFB, Whirlpool and IFB models) is the solution rather than continued cleaning.
How often should you clean the drum?
A drum clean once a month is ideal for machines used daily. Most modern washers show a tCL or “Tub Clean” reminder on their display at set intervals — when it shows, run the clean. For households in humid Indian cities (Mumbai, Kolkata, Chennai) where moisture levels are high, monthly cleaning is especially important. The drain filter should be checked and cleared every 2–3 months, or whenever a drain error code appears.
Prevention: habits that stop the problem from recurring
- Leave the door open after every wash — even 20 minutes of airing out significantly reduces moisture buildup.
- Use the right amount of detergent — over-dosing is the single biggest cause of residue buildup. Front-loaders need much less detergent than top-loaders; measure rather than pour.
- Use HE (high-efficiency) detergent in front-loaders — regular detergent creates excess foam that leaves more residue.
- Run a hot cycle occasionally — even one 60°C wash per week helps break down residue that cold cycles leave behind.
- Wipe the door seal after each wash — a quick wipe of the rubber fold removes the water that allows mould to grow.
Frequently Asked Questions
Why are there black bits coming off in my washing machine?
Black bits or flecks are almost always fragments of mould or detergent scale from the drum walls or rubber door seal. Running a drum clean cycle with vinegar or a cleaning tablet, followed by a plain rinse cycle, clears the loose debris. If the flecks persist, check the rubber seal for embedded mould that may need replacing.
How do I get rid of the bad smell from my washing machine?
Run an empty hot cycle with 2 cups of white vinegar in the detergent drawer and half a cup of baking soda in the drum. Clean the rubber door seal with vinegar or diluted bleach. Clean the drain filter. Leave the door open after every use. Monthly drum cleaning prevents the smell from returning.
Can I use bleach to clean a washing machine drum?
Yes, carefully. For heavy mould on the rubber seal, a diluted bleach solution (1 part bleach to 4 parts water) is effective. Do not mix bleach and vinegar — use one or the other. Some machine manufacturers advise against bleach in the drum itself; check your manual first, or use a dedicated drum-cleaning tablet instead.
How often should I clean my washing machine drum in India?
Once a month is recommended for daily-use machines, particularly in humid cities. Most machines display a tCL or Tub Clean reminder at the manufacturer’s recommended interval — run the clean whenever it appears.
The bottom line
A drum clean takes about 30 minutes, uses vinegar and baking soda you likely already have, and fixes both the black bits and the bad smell in one go. Do it monthly, leave the door open after every wash, and use the right amount of detergent — those three habits eliminate almost all washing machine hygiene problems before they start.