How to clean a washing machine with vinegar and bicarbonate of soda

Over time, a washing machine collects traces of detergent, fabric conditioner, lint and even grease from clothing. This can lead to unpleasant smells and marks on freshly washed items. The good news is that a straightforward mixture of everyday household products, used with the right cycle, can make a substantial difference without taking the appliance apart, helping it work more efficiently and last longer.

How does the simple washing machine cleaning mixture work?

The combination most commonly used to clean the drum and rubber seals is white distilled vinegar and bicarbonate of soda. Vinegar helps remove grease, break down detergent residue and neutralise odours, while bicarbonate of soda works as a “gentle exfoliant”, lifting stuck-on grime without damaging the components.

For the drum of an average-sized washing machine, 1 to 2 cups of white vinegar and 3 to 5 tablespoons of bicarbonate of soda will usually work well. You can increase the amount slightly for larger models, but avoid overdoing it to prevent excessive foam. Always choose white distilled vinegar rather than seasoned or coloured varieties, which may stain the machine or leave a strong smell.

How to clean a washing machine drum and rubber seals step by step

For internal cleaning, begin with the seals and detergent drawer, removing the heavier build-up first. Front-loading washing machines need particular attention around the rubber seal, as moisture, detergent and mould can quickly gather there.

Once this manual pre-clean is complete, follow these simple, safe steps to improve the condition of the inside:

1. Unplug the washing machine before carrying out any manual cleaning, to avoid accidents and ensure safety.
2. Remove any clothes and objects left in the drum, including coins, paper clips, paper and lint caught in the corners.
3. Wipe the rubber seals with a damp cloth and a little white vinegar, gently pulling back the folds to reach the gaps. For heavier grime or mould stains, sprinkle a small amount of bicarbonate of soda onto a cloth or soft brush and scrub lightly.
4. Clean the detergent and fabric conditioner drawer by removing it, if your model allows, then washing it in warm water with a brush to loosen the sludge that sticks in the corners.
5. Pour the vinegar directly into the drum, using around 1 to 2 cups and allowing it to spread across the bottom.
6. Add the bicarbonate of soda to the drum, scattering the tablespoons in separate areas so that it combines with the water when the cycle begins.
7. Close the washing machine and select the most suitable programme to make the internal cleaning as effective as possible.

Which cycle will improve internal washing machine cleaning?

To get the most from the vinegar and bicarbonate of soda, choose a long cycle with hot water if your washing machine offers that option. Hot water helps loosen grease, old detergent and internal deposits, reaching the drum and the channels through which water flows more effectively.

Many newer models include programmes such as “drum clean” or “tub wash”, which are ideal for this task. When using these programmes, do not add detergent or fabric conditioner; use only the stated mixture. At the end of the cycle, leave the lid or door open so the interior can air and dry thoroughly.

How often should you clean the inside of a washing machine?

How often you should carry out this cleaning depends on how much the machine is used. In homes where it runs several times each week, a monthly clean is generally enough. In places with heavier use, such as busy households or small laundries, it may be better to shorten the interval to every 15 days.

A few everyday habits can help keep the drum free from bad odours and prevent mould, extending the benefits of internal cleaning:

• Leave the lid or door slightly open after washing, allowing the inside to dry and ventilate.
• Take clothes out as soon as the cycle ends, rather than leaving them damp inside.
• Dry the rubber seals with a clean cloth, especially on colder or more humid days.
• Avoid using too much detergent and fabric conditioner, reducing the build-up of internal deposits.

By watching for signs such as unpleasant odours, stains on the rubber seals, excessive foam and small specks of dirt on clothes, you can adjust your cleaning routine more effectively. This helps the washing machine run more efficiently, reduces the need for major maintenance and extends the appliance’s lifespan.