How to clean a washing machine (including the parts that actually cause the smell)

A washing machine that smells damp, or marks clean clothes with grey streaks, is not broken. It is dirty in the three specific places detergent residue and water sit long enough to grow things: the door gasket, the detergent drawer, and the filter. Cleaning those beats every scented product marketed to mask the problem.

The gasket is the crime scene

On front loaders, fold back the rubber door gasket and look: black speckles, slime, the odd lost sock. Wipe it out with a cloth and warm soapy water, getting into the folds. Leave the door and drawer ajar between washes so the inside dries — sealed-in moisture is what grows the smell in the first place.

The detergent drawer slides out

Most drawers release fully with a press of a recessed clip (your manual shows where, or the internet knows your model). Wash it under the tap with an old toothbrush; check the jet holes above where it sits and clear the residue that blocks rinse water.

The filter you have been avoiding

Behind a small hatch near the floor lives the drain filter — the place coins, hair clips and lint go to retire. Put a shallow tray or towel down, open it slowly (water will come), remove and rinse the filter, and screw it back snugly. Once a season is the honest rhythm; more if you have pets or small humans.

Hot wash, occasionally

Cold-wash habits let grease and residue accumulate. A monthly hot cycle — empty, with a maker-approved cleaner or plain washing soda per its instructions — flushes the tub and the pipes behind it. Skip the folk chemistry; heat does the work.

Prevention rhythm

Door ajar after washes; drawer ajar; filter each season; a monthly hot cycle; and measure detergent honestly — most people use far more than the machine needs, and the surplus is what rots. All of this except the hot cycle is on the once-a-season checklist.