A washing machine can look clean from the outside while hiding a surprising amount of residue. Detergent, fabric conditioner, loose fibres and dampness collect in the drawer, door seal and other less visible places. Eventually you might notice a sour smell when opening the door or find that freshly washed clothes no longer smell particularly fresh.
Most machines benefit from routine cleaning, but it is worth following the appliance's own instructions. A front-loader with a rubber gasket and accessible pump filter has different maintenance points from a top-loader or a modern washer with an automatic cleaning cycle.
Start with the appliance manual
Find the model number, usually on a label around the door, rear or another location described by the manufacturer. Look up its cleaning and maintenance instructions.
Some machines have a dedicated Drum Clean or Tub Clean programme that is intended to run empty. Others recommend a suitable washing-machine cleaner and a specified cycle.
Do not assume the internet's hottest possible wash or a random mixture of chemicals will be appropriate for every machine. Certain seals, finishes and cleaning systems require particular products.
Work safely before touching parts
Switch the machine off before cleaning external surfaces or removable components. Disconnect power when the manufacturer's instructions require it, particularly before accessing a pump filter.
Make sure the drum has cooled and is empty. Have towels ready because a drain filter may release residual water even when no washing programme is running.
Never reach into moving parts or remove panels that are not designed for user maintenance. Electrical and plumbing faults should be inspected by suitably qualified people.
Empty and inspect the drum
Remove any washing, loose coins and visible debris. Use a soft cloth to wipe accessible surfaces, especially the lip around the door opening.
Look for small objects caught in the drum perforations or between components. Do not force tools into gaps to retrieve something you cannot reach safely.
A rusty stain or unusual metallic scratching is not automatically dirt. It can indicate damage or a trapped object needing proper repair.
Run the manufacturer's cleaning cycle
Use the dedicated cleaning programme if your machine has one. Follow the recommended temperature, duration and whether to use a branded machine cleaner or another approved product.
Whirlpool describes a Clean Washer cycle for suitable models and advises following product and machine instructions. Different brands have their own procedures.
Run the cycle with the drum empty unless the manual explicitly says otherwise. Putting towels in 'to help scrub it' can interfere with a programme designed to clean the washer itself.
Do not mix bleach with vinegar
Home-cleaning guides often suggest vinegar, bleach, bicarbonate of soda and other substances as though they are interchangeable. They are not.
Chlorine bleach mixed with vinegar or another acid can release toxic chlorine gas. Mixing it with ammonia-based cleaners can also produce dangerous fumes.
Use only the cleaner approved by your machine maker and do not combine products. If the manual specifies a bleach cleaning procedure, follow its dosing and rinsing instructions exactly.
Clean the detergent drawer
The dispensing tray can develop sticky detergent residue and mould-like deposits, especially where liquid products accumulate.
Remove the drawer only by the mechanism described in the manual. Many have a release catch; forcing it can snap a plastic component.
Rinse the removable tray under warm water and use a soft brush for small channels. Clean the drawer housing carefully without pouring large quantities of water into electronics or inaccessible cavities.
Check the fabric-conditioner compartment
This section often contains a siphon cap or narrow channels where thick conditioner can build up. Remove and wash components that the manufacturer identifies as user-removable.
Reassemble every part correctly after cleaning. A missing or poorly positioned siphon can stop the dispenser working properly and leave product behind.
If you regularly find a thick residue, review how much conditioner you use. An excessive dose can create more cleaning work and may affect some textiles.
Wipe the door seal carefully
Front-loading machines have a rubber gasket that can hold water, lint, hair and small objects in its folds. Pull the accessible lip back gently according to the manual and wipe away debris.
Use a soft cloth and a cleaner safe for rubber seals. Avoid sharp tools, rough scourers and concentrated chemicals that may damage the material.
If the gasket is torn, detached or leaking, it needs repair rather than extra cleaning. A good seal is essential to contain wash water safely.
Inspect the pump filter if accessible
Some washers have a serviceable pump filter behind a small lower access door. Bosch's guide explains how to isolate power, prepare towels and a shallow tray, drain residual water and remove obstructions.
Not every machine uses exactly that filter design. Do not unscrew a random cover without checking the manual because water may spill rapidly.
Remove coins, lint or buttons carefully, clean the filter and reinstall it securely. A loose cap can cause leaking when the next wash begins.
Clean the exterior and controls
Wipe the lid, door and controls with a suitable lightly damp cloth. Do not spray cleaner directly into electronic displays or switches.
Dry the exterior promptly, especially around metal edges and the base. Check for water pooling underneath, which may indicate a hose or door-seal leak.
If the power cable is damaged, stop using the appliance and arrange professional inspection. Cleaning cannot make exposed wiring safe.
Reduce mildew smells between loads
Leave the door slightly ajar after a wash when safe and recommended by the manufacturer, allowing the drum and gasket to dry.
Remove finished laundry promptly rather than leaving it sealed in a damp drum overnight. That single habit can make a noticeable difference to freshness.
If children or pets can access the machine, consider their safety before leaving any door open. Follow the manufacturer's advice about safe ventilation and access.
Measure detergent instead of guessing
Using too much detergent can create residue in the drum and dispensing system. Follow the product's dosing guidance for water hardness, soil level and load size.
Modern efficient machines may use relatively little water, so an enormous detergent dose can be particularly hard to rinse away.
Conversely, consistently using too little detergent may leave dirt in clothing. The objective is correct dosing, not eliminating detergent entirely.
Avoid overloading the drum
Washing needs space for fabrics to move. A tightly packed machine can rinse poorly and put unnecessary strain on its components.
Follow the model's load guidance for the selected programme. The advertised maximum capacity may apply only to certain cycles, not delicate or wool settings.
If towels still smell musty after the machine is cleaned, review the wash temperature, drying conditions and whether laundry spends too long damp after the cycle.
What if the smell persists?
Persistent drain odours, water left in the drum or repeatedly blocked filters can indicate a drainage or plumbing problem.
Check the manufacturer-approved troubleshooting steps and whether the waste hose is installed correctly. Do not pour aggressive drain-cleaning chemicals into the washer.
If the machine is leaking, tripping electricity or making abnormal mechanical noises, stop and arrange service rather than running repeated hot cleaning cycles.
How often should you clean it?
A light gasket wipe and drawer check can become part of normal laundry routine. Full cleaning cycles should follow the appliance maker's recommended frequency and product directions.
Households doing many loads, washing heavily soiled workwear or using substantial quantities of liquid additives may notice build-up sooner.
There is no need to dismantle the washer monthly to prove it is clean. Routine user-accessible care is the goal.
Keep the improvement going
An effective routine is to remove washing promptly, let the machine dry safely, dose detergent correctly and clean the drawer, gasket and accessible filter when needed.
Run its approved cleaning cycle as directed. If an odour or leak returns despite that maintenance, investigate the actual cause rather than hiding it with fragrance beads.