Washing Machine Black Flakes: What They Are and How to Get Rid of Them

August 10, 2026
by Brodie Cook

Washing Machine Black Flakes build up in agitator also called scrud

Black flakes in a washing machine are often pieces of built-up detergent, fabric softener, and grime that have loosened from inside the tub. This waxy residue is commonly called scrud. Dirt, lint, mould around damp parts, rust or a worn rubber component can also create dark debris, so the flakes are a clue rather than a diagnosis.

Pause your normal laundry loads, check the washer manual, clean the parts you can reach, then run the approved empty cleaning cycle with a washing machine cleaner tablet.

Keep rinsing the empty machine until the water and drum stay clear. If hard, rubbery or rust-coloured pieces keep returning, arrange appliance service instead of dismantling the washer yourself.

Quick answer: what to do first

Remove the laundry and collect one or two flakes for a closer look.
Check the drum, detergent dispenser, rubber seal, filter, lid rim and agitator area where accessible.
Read the cleaning instructions for your exact model.
Run the empty Tub Clean, Drum Clean, or hottest approved cleaning cycle using only the method allowed by the manufacturer.
Wipe out loosened debris, then run an empty rinse cycle.
Repeat the rinse until no new flakes appear. Arrange service if debris remains after three empty cycles or looks like a damaged machine part.

Do not mix washing machine cleaner, laundry detergent, fabric softener, white vinegar, baking soda or bleach in the same cycle.

What are the black flakes in your washing machine?

The most common explanation is a layer of residue hidden where a normal wash does not rinse it away. LG uses the term scrud for the waxy build-up that can form when fabric softener comes into contact with detergent. The manual notes that water quality and temperature can also contribute to the build-up.

Samsung gives a similar explanation for black particles in top loaders. Its support guidance says that frequent cold washing or low hot-water pressure can allow dirt and undissolved detergent to collect on the inner bowl. Pieces can then break away during a wash and land on clean clothes.

The appearance of a flake can point you towards the next check, but it cannot confirm the cause on its own.

What you notice	Possible source	Where to check
Thin black or brown flakes with a waxy feel	Scrud made from detergent (soap scum), fabric softener and trapped grime	Dispenser, tub rim, inner bowl and agitator or impeller area
Gritty dark particles after mostly cold washes	Dirt or detergent that did not dissolve or rinse away	Detergent dose, water supply and inner tub
Soft black smears with a musty odour	Damp residue or mould	Front-loader door seal, detergent drawer and other wet folds
Fibres or papery bits	Lint, tissues or debris from a previous load	Drum, lint filter and pump filter where user-accessible
Rubbery pieces or hard rust-coloured fragments	A worn component, damaged coating or corrosion	Stop using the washer and arrange an inspection

dirt grime and detergent residu in rubber seals of washing machine

Why black flakes appear on clothes after washing

A normal wash can pull loose residue from behind the visible drum or inner bowl. The debris floats in the wash water and settles on clothes during the cycle. That is why the laundry can come out looking dirtier even though the stainless steel drum appears clean.

Several habits can make this more likely:

using more detergent than the load, water hardness, or machine requires;
overfilling the fabric softener dispenser;
running only cold wash cycles when the appliance instructions recommend periodic warmer maintenance;
leaving detergent, softener and moisture in the dispenser or seal;
missing regular Tub Clean or Drum Clean cycles;
allowing lint and small debris to remain in an accessible filter.

Front and top loaders hide build-up in different places. In a top load washing machine, inspect the tub rim, dispenser, lint filter, and the reachable area around the agitator or impeller. In a front loader, focus on the detergent drawer, rubber seals, and pump filter as well as the drum. Do not remove an agitator, inner tub or sealed panel unless the manual identifies it as a user-serviceable part.

How to get rid of black flakes in a washing machine

1. Stop adding clothes until the empty washer runs clear

Another load can collect more debris and may leave marks on fabric. Remove the clothes, shake off loose flakes, and follow each garment's care label before rewashing. Fix the source inside the machine first.

2. Check the manual before choosing a cleaner

Cleaning instructions vary by brand and model. Some machines allow a compatible washing machine cleaner during a hot or dedicated cleaning cycle. Others instruct owners to run a self-clean cycle without added detergent or cleaning agents.

Search the manufacturer's support site with the model number if the paper manual is missing. Use one approved method only. More products in the drum do not mean a better clean.

3. Clean the parts a wash cycle may miss

Switch the appliance off before cleaning removable or user-accessible parts. Follow the manual as you:

remove and rinse the detergent dispenser, if it is designed to come out;
wipe each fold of a front-loader rubber seal;
clear lint and debris from an accessible filter;
wipe around the lid, tub rim and reachable agitator or impeller surfaces on a top loader;
clean the door glass and visible stainless steel drum with a soft cloth.

Do not force open a filter panel or pour water near controls. If a part will not move as the manual describes, leave it in place.

4. Run the approved empty cleaning cycle

how to use the washimng machine cleaner tablet by Lucent Globe

Use the Tub Clean, Drum Clean, Self Clean or Machine Clean setting when available. If your machine accepts an added cleaner, follow its directions and the appliance manual.

Our Washing Machine Cleaner Tablets are pre-measured at one tablet per cleaning cycle. Place one tablet at the bottom of the empty machine, run a hot wash cycle, then wipe away released residue. Do not add laundry detergent, fabric softener, vinegar, baking soda or bleach to that cycle.

For a complete routine covering the dispenser, seal, filter and both washer types, follow our guide on how to deep-clean a washing machine.

5. Wipe and rinse until the flakes stop

When the cleaning cycle ends, wipe the drum, seal and lid area with a clean damp cloth. Run an empty rinse cycle and inspect the drum again.

The first clean can make the problem look worse because it loosens old residue. That does not automatically mean the cleaner created the flakes. However, the amount should fall as the loosened material is rinsed away. Samsung advises running up to three empty cycles when residue is present, then requesting service if particles remain.

6. Know when another cleaning cycle will not solve it

Stop and arrange appliance service when:

rubbery pieces, hard fragments or rust-like particles appear;
flakes return after three empty cycles;
the door seal, hose or drum coating looks damaged;
the machine leaks, will not drain or displays an error;
debris appears to come from behind a non-removable inner tub;
you would need to dismantle the agitator, drum or cabinet to reach the build-up.

A cleaner can loosen residue, but it cannot repair a worn seal, corroded part or damaged hose.

How to prevent black flakes from coming back

Once the washer runs clear, small maintenance habits help stop another layer forming.

Use our pre-measured detergent sheets; you won't use harsh chemicals. A double win.
Use our fabric softeners; these are also pre-measured. We've made it as easy as possible.
If you are not using our products, then clean spills from the detergent and softener dispenser before they harden.
Run the maintenance cycle at the interval shown in your manual or when the washer displays a reminder.
If the appliance and garment labels allow, include an occasional warm or hot wash rather than using cold water for every load.
Remove wet washing promptly, then leave the door, lid and dispenser slightly open when safe around children and pets.
Wipe the seal and clean user-accessible filters regularly.

If you are weighing up a DIY method, read our comparison of washing machine cleaner versus vinegar and baking soda. The correct choice depends on what your appliance manufacturer permits; avoid combining methods.

A simple maintenance option for compatible machines

Black flakes are a sign to clean the machine, not just rewash the clothes. Once you have checked the manual and ruled out damaged parts, a pre-measured cleaner keeps the maintenance step simple.

Frequently asked questions

Does using powder or liquid detergent affect scrud build-up?

Yes, both powder and liquid detergent can contribute to scrud when too much is used, or it does not rinse away completely. Powder detergent may leave undissolved particles, particularly in cold water, while liquid detergent can leave a sticky residue when overdosed. Fabric softener can combine with this detergent residue, body oils, lint and dirt to form the waxy build-up known as scrud.

Are black flakes in a washing machine always mould?

No. Black or brown flakes are often scrud, detergent residue, dirt or lint. Mould is more likely when you can see dark growth or smears in a damp rubber seal or dispenser and notice a musty odour. Rubbery or rust-coloured fragments may indicate a damaged part rather than residue.

Will vinegar remove black flakes from a washing machine?

Vinegar may be permitted for certain machines or types of mineral build-up, but it is not suitable for every washer. Check the manual because Bosch Australia advises against using vinegar in its washing machines, as it can affect rubber parts.

How do I remove black flakes or scrud from clothes?

Shake or gently brush off loose flakes once the garment is completely dry, taking care not to rub wet residue deeper into the fabric.

If dark or greasy marks remain, flush warm water directly through the back of the stain to push out trapped residue, then soak the item in warm water mixed with 1 cup of white vinegar for 20 to 30 minutes to break down the waxy fats.

Once your washing machine is running clear, rewash the affected garments without adding extra soap or fabric softener, and always air-dry them. Dryer heat will bake leftover waxy residue permanently into the fabric fibres.

Why do flakes keep appearing after I cleaned the washer?

The cleaning cycle may have loosened a larger deposit behind the visible drum or inner bowl. Wipe out the debris and run empty rinse cycles. If the volume does not fall or flakes remain after three empty cycles, arrange appliance service rather than adding more products.