Dishwashers can develop unpleasant odours when not cleaned adequately. Food debris, grease, soap scum, bacteria and mould all contribute to musty smells. A blocked filter or drain, or residue in door seals, can also cause odours.
White vinegar remedy
Cleaning enthusiast and TikTok creator Kat (@cleanwithKat) recommends using white vinegar. Pour one cup of white vinegar into a bowl, place it on the top rack of the dishwasher, and run a regular cycle. The acetic acid in vinegar neutralises alkaline compounds from old food and grime, dissolves greasy deposits, and breaks down limescale and mould spores.
Cleaning product manufacturer Dr Beckmann explained: "The acid in vinegar can help remove limescale from your dishwasher, but if it's too concentrated, it may damage rubber seals and other sensitive parts. Also, be prepared for the strong, lingering smell vinegar leaves after cleaning."
Expert warnings on alternatives
Experts at consumer site Which? previously advised against using apple cider vinegar or lemon juice, stating: "Do not chuck in apple cider vinegar or lemon juice; it's a quality piece of engineering, not a fish supper." Currys noted apple cider vinegar can be a substitute if white vinegar is unavailable, but it may degrade rubber seals and discolor metal. CNET warned: "Be aware that vinegar can break down the rubber gaskets and hoses in your dishwasher, leading to costly damage. On top of that, if vinegar mixes with salt that's been left on your dishes, it can discolor metal pans, flatware and mixing bowls." The publication advises against pouring vinegar into the rinse aid dispenser.
