How to Clean a Dishwasher (Filter, Spray Arms and Smell)

If your dishes come out gritty or the dishwasher smells, it's probably time to clean it. Food particles collect in the filter and spray arms, and grease builds up in hidden spots. The process takes about 30 minutes.

Check your dishwasher's manual, as models vary.

Step 1: Empty the Dishwasher and Remove the Racks

Take out the bottom rack to reach the filter and spray arm easily.

Step 2: Clean the Filter

Most modern dishwashers have a removable filter at the bottom.

Twist and lift it out (check your manual).
Rinse it under warm water.
Scrub gently with a soft brush and dish soap.
Put it back securely.

This is the step that fixes most smells and gritty dishes. Clean the filter once a month.

Step 3: Clean the Spray Arms

Check the holes in the spray arms for blockages. Clear them with a toothpick. Many spray arms can be removed and rinsed under the tap.

Step 4: Wipe the Door and Seal

Wipe the rubber door gasket, the edges of the door and the bottom of the door, where grime builds up, with warm soapy water.

Step 5: Run a Cleaning Cycle

Run an empty hot cycle with a dishwasher cleaner, following the product directions. Some people place a cup of white vinegar upright on the top rack, but check your manual, as some manufacturers recommend against it.

Step 6: Wipe the Outside

Clean the control panel and handle. For stainless steel fronts, wipe in the direction of the grain.

Prevent Dishwasher Smells

Scrape plates before loading.
Clean the filter monthly.
Run the garbage disposal before starting the dishwasher if they share a drain.
Leave the door slightly open after a cycle to let it dry.

FAQ

Why are there white spots on my dishes? Usually hard water. Use a rinse aid and a dishwasher cleaner.

How often should I deep clean the dishwasher? Once a month.