Clean your KitchenAid dishwasher monthly to keep it running well and prevent odors and buildup

A KitchenAid dishwasher needs cleaning just like any other appliance, even though it cleans your dishes. Mineral deposits, food particles, and grease can build up inside the tub, spray arms, and filter over time. This buildup reduces water flow, traps odors, and makes the machine work harder. A monthly cleaning takes about 20 minutes and costs almost nothing—just white vinegar and a soft brush.

The good news: you do not need special products or take the machine apart. You clean it while it runs, starting with the filter and spray arms, then running a hot cycle with vinegar. This guide walks you through each step in the order that works best.

Key Takeaways

  • Remove and rinse the bottom filter basket every month—this is where most food debris collects and causes odors.
  • Check the spray arm holes for clogs by holding them up to light; use a toothpick to clear any blocked openings.
  • Run a hot wash cycle with white vinegar in the detergent dispenser to dissolve mineral deposits and kill odor-causing bacteria.
  • Wipe the door gasket and edges with a damp cloth monthly to prevent mold and keep the seal tight.
  • If your machine has a self-cleaning cycle, use it every few months as an alternative to the vinegar method.

Remove and rinse the filter basket

The filter basket sits at the bottom of the tub and catches food particles before they clog the drain. Open the door, look at the bottom center, and you will see a cylindrical basket—usually made of plastic mesh. Twist it counterclockwise (or pull straight up, depending on your model) to remove it.

Hold the basket under warm running water and rinse away all visible food and debris. Use your fingers or a soft brush to scrub the mesh gently. If food is stuck hard, soak the basket in warm water for 5 minutes, then scrub again. Do not use a hard brush or scrub pad—you can damage the mesh. Once it is clean, set it aside; you will reinstall it after the next step.

Check and clear the spray arms

The spray arms are the rotating parts that spray water onto your dishes. Most KitchenAid models have two: one on the bottom and one on the top (or middle). These arms have small holes that spray water, and those holes can clog with mineral deposits or food particles.

Locate the spray arms and hold each one up to a light source. Look through the holes—you should see light coming through. If the holes look blocked or cloudy, use a toothpick or a thin straightened paperclip to gently poke through each hole. Work slowly and do not force it; you can crack the arm. Rinse the arms under warm water to flush out any loosened debris. If your model has removable spray arms, twist them counterclockwise to remove them, clean them thoroughly, and reinstall them by twisting clockwise until snug.

Run a hot cycle with white vinegar

White vinegar dissolves mineral buildup and kills bacteria that cause odors. You do not need to buy dishwasher cleaner—plain white vinegar works just as well and costs less.

Reinstall the filter basket by twisting it clockwise (or pushing it straight down) until it sits flush. Close the door. Pour one cup of white vinegar into the detergent dispenser cup at the top of the door—do not use detergent. Select the hottest wash cycle available (usually "Pots and Pans" or "Heavy Soil") and start the cycle. The heat and vinegar will break down deposits inside the tub, spray arms, and drain. When the cycle finishes, open the door and smell inside—any odor should be gone or much weaker.

Wipe the door gasket and edges

The rubber gasket (seal) around the door traps moisture and food particles, which can grow mold and cause leaks. Once a month, wipe it with a damp cloth or soft sponge. Pay special attention to the corners and folds where debris hides.

Also wipe the inside edge of the door frame and the front face of the tub opening. These areas collect splashes and dried detergent. Use a cloth slightly dampened with water or a 50/50 mix of water and white vinegar. Do not use bleach or harsh chemicals—they can damage the rubber seal and the paint on the door.

Clean the exterior and control panel

The outside of your KitchenAid dishwasher also needs care. Wipe the front panel and handle with a soft, damp cloth. If your model has a stainless steel finish, use a cloth dampened with water only, or buy a stainless steel cleaner made for appliances (follow the product instructions).

For the control panel, use a dry or barely damp cloth to avoid getting water into the buttons or display. Never spray cleaner directly onto the panel. If the handle is sticky or has buildup, dampen a cloth with a little warm water and mild dish soap, wipe the handle, then dry it when ready with a clean cloth.

When to call a professional

If your dishwasher still has a strong odor after cleaning, or if water is not spraying properly even after you have cleared the spray arm holes, the drain line or pump may be clogged deeper inside the machine. This requires opening the machine, which can damage internal parts if done wrong. Contact a KitchenAid service technician or a local appliance repair company.

Similarly, if the door gasket is cracked, torn, or no longer seals tightly, water will leak onto your floor during a cycle. A technician can replace the gasket—it is not a repair you should attempt yourself, because the door has springs and hinges that can pinch fingers or snap back unexpectedly.

Frequently Asked Questions

How often should I clean my KitchenAid dishwasher?

Once a month is ideal if you run the machine regularly. If you use it only a few times a week, every six weeks is fine. If you notice odors or see buildup, clean it sooner. The filter basket should be rinsed every time you empty the dishwasher.

Can I use bleach or commercial dishwasher cleaner instead of vinegar?

Bleach can damage the rubber gasket and interior finish over time. Commercial cleaners work, but white vinegar is cheaper, safer for the machine, and just as effective for most buildup. If you prefer a commercial product, choose one made specifically for your dishwasher brand and follow the instructions on the bottle.

What if water is leaking from under the door?

First, check that the door closes fully and the gasket is clean and not cracked. If the gasket looks fine but water still leaks, the seal may be worn out or the door may not be aligned properly. This requires a technician—do not try to adjust the door yourself, as the hinges are under spring tension.

Is it normal for my dishwasher to smell like vinegar after cleaning?

A slight vinegar smell right after the cycle is normal and fades within an hour or two as the tub dries. If the smell lingers for more than a few hours, run another hot cycle with just water (no vinegar or detergent) to rinse out any remaining vinegar.

Can I clean the spray arms while the dishwasher is running?

No—always stop the cycle and open the door before you remove or clean the spray arms. The machine can start spraying water unexpectedly if you reach inside during a cycle, and you could be injured. Wait until the cycle is complete or press the start/cancel button to stop it safely.