Households across the UK are being advised to pour mouthwash into their washing machines this May for a vital hygiene reason. A cleaning specialist from an appliance repair company has shared this unconventional tip to help eliminate germs and minimise unpleasant odours during laundry cycles.
Why Your Washing Machine Needs Extra Care
Despite being regularly filled with hot water and detergents, washing machines can accumulate dirt, grime, and bacteria over time. They are also susceptible to mould growth, which can affect both machine performance and laundry freshness.
Ian Palmer-Smith, an appliance repair expert at Domestic & General, explains that a splash of alcohol-based mouthwash directly into the detergent drawer is an affordable and straightforward method for deep cleaning. He recommends performing this 'maintenance wash' every three months to prevent bacteria, mould, and detergent build-up.
How to Use Mouthwash Effectively
Palmer-Smith advises pouring half a cup of colourless, alcohol-based mouthwash into the drum or detergent drawer and running an empty hot cycle. The antiseptic properties kill bacteria, sanitise the drum, and leave it smelling fresh. For best results, combine this with cleaning the detergent drawer and filter, which are often the quickest parts to get dirty.
He also suggests using mouthwash on laundry loads with stubborn odours, such as activewear and socks, to remove lingering smells and bacteria. However, it is crucial to use a colourless option to avoid staining clothes or the machine’s interior.
Precautions to Avoid Damage
While mouthwash is generally safe in moderation, excessive use can lead to excessive suds and potential overflow if it reacts with detergent. An overflowing machine can cause internal damage and costly faults. Palmer-Smith warns against using this hack on delicate fabrics, as high alcohol content in some mouthwashes may degrade certain materials.
Regular maintenance, including monthly hot cycles with a dedicated washing machine cleaner, is recommended. White vinegar or baking soda are good alternatives if a dedicated cleaner is unavailable. Having washing machine insurance can provide peace of mind against unexpected repair costs.



