The best way to clean a dishwasher is to start by removing and washing the filter and spray arms, then run a hot cycle with white vinegar in a dishwasher-safe cup, followed by a cycle with baking soda sprinkled on the bottom. This two-step process dissolves grease, mineral deposits, and food debris, leaving your dishwasher fresh and efficient. Do this monthly to prevent odors and maintain performance.
Quick answers: Clean the filter every month, run a vinegar cycle to descale, and use baking soda to deodorize. Avoid bleach and abrasive cleaners.
- Frequency: Clean your dishwasher every 1–3 months, or more often if you notice odors or residue.
- Best Cleaner: White vinegar is the top choice for dissolving hard water deposits and grease. Use 1 cup in a dishwasher-safe bowl on the top rack.
- Filter Location: The filter is at the bottom of the dishwasher tub, under the lower spray arm. Twist it counterclockwise to remove.
- Spray Arm Care: Check spray arm holes for clogs. Use a toothpick or small wire to clear debris, then rinse under running water.
1. Remove and Clean the Filter
The filter traps food particles so they don’t recirculate onto your dishes. Locate it at the bottom of the tub, usually under the lower spray arm. Twist the filter counterclockwise and lift it out. Rinse it under hot running water, using a soft brush or sponge to remove stuck-on debris. For greasy buildup, soak the filter in warm, soapy water for 10 minutes, then scrub and rinse. Replace it by aligning the tabs and twisting clockwise until it clicks.
2. Clean the Spray Arms
Spray arms can become clogged with mineral deposits or food particles, reducing cleaning power. Remove the lower spray arm by unscrewing the retaining nut or pulling it straight up (depending on your model). The upper spray arm often clips or twists off. Inspect the spray holes for blockages. Use a toothpick, paper clip, or small wire to gently clear each hole. Rinse both arms under running water. Reinstall them securely.
3. Wipe Down the Door Gasket and Interior
The rubber gasket around the door can harbor mold and mildew. Dampen a cloth with white vinegar or a mild dish soap solution, and wipe the entire gasket, paying attention to crevices. Also wipe the interior walls, the bottom of the tub, and the detergent dispenser. For stubborn spots, use a soft toothbrush. Avoid abrasive pads that could scratch the stainless steel or plastic.
4. Run a Vinegar Cycle to Descale
Hard water minerals and grease accumulate inside the dishwasher, causing white residue and odors. Place a dishwasher-safe cup or bowl filled with 1 cup of white vinegar on the top rack (not the silverware basket). Run a hot water cycle (the longest, hottest setting, like Pots & Pans). The vinegar will break down grease, mineral deposits, and soap scum. Do not add detergent during this cycle.
5. Run a Baking Soda Cycle to Deodorize
After the vinegar cycle, sprinkle about 1 cup of baking soda across the bottom of the dishwasher tub (not in the dispenser). Run a short hot water cycle (like Rinse or Quick Wash). Baking soda neutralizes lingering odors and helps remove any remaining film. Your dishwasher will come out smelling fresh. Do not use vinegar and baking soda together in the same cycle; they neutralize each other.
6. Clean the Exterior and Control Panel
Finish by wiping down the dishwasher’s exterior. For stainless steel, use a microfiber cloth with a stainless steel cleaner or a little vinegar and water. For plastic or painted fronts, a mild all-purpose cleaner works. Clean the control panel with a damp cloth (not wet) to avoid damaging electronics. Dry with a soft cloth to prevent water spots.
Pro Tips
- Place the vinegar cup on the top rack so the vinegar is distributed during the wash cycle, not drained immediately.
- If your dishwasher has a garbage disposal unit, run it before the vinegar cycle to empty any food debris.
- Use a commercial dishwasher cleaner like Affresh or Glisten once every 3 months if you have extremely hard water.
- Check the manual for your model’s specific filter and spray arm removal instructions; they vary by brand.
Common Mistakes to Avoid
- Using bleach or harsh chemicals can damage the rubber gaskets and stainless steel interior.
- Putting vinegar in the rinse aid dispenser will damage the dispenser mechanism; always use a cup on the top rack.
- Forgetting to remove the filter before cleaning; a clogged filter defeats the purpose of the cleaning cycle.
- Running vinegar and baking soda together in the same cycle; they react and cancel each other out.
FAQ
How often should I clean my dishwasher?
Clean the filter monthly to prevent food buildup. Run a deep clean with vinegar and baking soda every 1–3 months, or sooner if you notice odors or residue on dishes.
Can I use bleach to clean my dishwasher?
It’s not recommended. Bleach can damage the rubber gasket and stainless steel components. Stick to vinegar and baking soda for safe, effective cleaning.
My dishwasher still smells after cleaning. What should I do?
Check for trapped food in the filter, spray arms, and around the drain. Also clean the door gasket thoroughly. If the smell persists, try a commercial dishwasher cleaner designed for odors.
Do I need to clean a new dishwasher?
Yes, even new dishwashers can have manufacturing residues. Run a vinegar cycle before first use to remove any oils or debris.
The Bottom Line
Regular cleaning keeps your dishwasher running efficiently and extends its life. By following these steps monthly, you’ll prevent costly repairs and enjoy spotless dishes every time. Got a stubborn problem? Check your owner’s manual or consult a professional for model-specific advice.
