How to Clean a Smelly Dishwasher
A dishwasher that smells is almost always trapped food and grease — in the filter, the spray arms, and around the door seal. A quick deep clean and a monthly habit keeps it fresh.
1. Clean the Filter
The cylindrical filter in the bottom of the tub is where food collects and rots. Twist it out, rinse it under hot water with a brush, and clear the sump opening. This is the number-one source of the smell — do it first.
2. Wipe the Seals and Edges
Food and slime build up around the rubber door gasket and the bottom edge of the door where the spray does not reach. Wipe these with a damp cloth and a little dish soap or vinegar.
3. Clear the Spray Arms
Pull the spray arms (they usually twist or unclip) and poke out any clogged spray holes with a toothpick. Clogged arms mean poor cleaning and lingering food.
4. Run a Cleaning Cycle
Place a cup of white vinegar (or a dishwasher cleaner tablet) on the top rack and run a hot cycle empty. This dissolves grease and mineral film. Do this monthly to keep odors away.
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FAQ
Trapped, decaying food in the filter and sump. Clean the filter, wipe the seals, clear the spray arms, and run a vinegar cleaning cycle.
Yes. A cup of white vinegar on the top rack during an empty hot cycle cuts grease and odor. Do it monthly.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.