Natural Way to Clean Dishwasher | Two-Ingredient Cycle

A funky smell or cloudy residue in the dishwasher doesn’t mean you need a pricey cleaning tablet. A two-step cycle using white vinegar and baking soda — both standard kitchen staples in US households — handles the job thoroughly. The vinegar dissolves hard-water scale and grease, while the baking soda neutralizes odors and loosens organic buildup. No specialty products required, and the whole process takes about two hours of hands-off time.

What You Need Before You Start

This method uses two common pantry items. White vinegar (cleaning or regular) costs about $3–$5 per gallon, and a box of baking soda (ARM & HAMMER™ is a common pick) runs $2–$4. You’ll also need a dishwasher-safe bowl or glass, a soft toothbrush, and optionally a toothpick or small wire for spray-arm holes.

Step 1: Manual Cleaning of the Filter, Spray Arms, and Gasket

The natural cleaning cycle works best when the dishwasher’s built-in parts are already free of large debris. Start by scraping any loose food from the bottom and the drain area.

• Filter: Locate the filter below the bottom spray arm — it usually twists or lifts out. Remove the mesh and plastic components, soak them in warm soapy water for 20–30 minutes, then scrub gently with a soft toothbrush. Rinse under warm water and relock it into place. Some models have a self-cleaning filter that works like a garbage disposer; those do not need manual removal. Check your manual to be sure.
• Spray arms: If your model allows removal, take them off per the manual. Use a toothpick or small wire to clear any blocked spray holes. For stubborn mineral deposits, soak the arms in a mix of vinegar and warm water.
• Door gasket: Mix ½ cup vinegar with 3 cups hot water. Dip a toothbrush in the solution and scrub the rubber gasket around the door to remove grime.

Step 2: The Vinegar Cycle for Minerals and Grease

This first run tackles the hard-water scale and grease that cause cloudy glassware and slow drainage.

1. Fill a dishwasher-safe bowl or glass with 1–2 cups of white vinegar.
2. Place the bowl upright on the top rack. Some manufacturers (like KitchenAid) suggest the bottom rack for better sloshing — either placement works as long as the vinegar can splash during the cycle.
3. Run a hot water cycle on the heaviest setting. Do NOT add any dish detergent — it neutralizes the vinegar’s cleaning ability.
4. Turn off the Heat Dry option and select Air Dry or Energy Saving Dry instead. Heat drying causes the vinegar to evaporate too early, reducing its effectiveness.
5. Let the complete cycle finish.

Step 3: The Baking Soda Cycle for Odors and Organic Matter

Once the vinegar cycle ends, the next step removes lingering smells and any remaining organic residue.

1. Remove the bowl or glass from the dishwasher.
2. Sprinkle 1 cup of baking soda evenly across the bottom of the dishwasher.
3. Run a short or quick hot water cycle (about one hour). Again, no detergent and no Heat Dry.
4. When the cycle finishes, open the door and let the dishwasher air dry completely. Wipe away any leftover baking soda dust with a damp cloth if needed.

Common Mistakes That Reduce Effectiveness

Even with the right ingredients, a few slip-ups can leave the dishwasher dirty. Here is what to avoid:

• Pouring vinegar directly into the base. Vinegar needs a bowl so it sloshes during the cycle. Direct contact with the bottom may damage components and reduce cleaning coverage.
• Using Heat Dry. Heat evaporates the vinegar before it can break down grease and minerals — always switch to Air Dry.
• Skipping the filter cleaning. A clogged filter traps old food, creating odors that the vinegar and baking soda cycles can’t fully fix.
• Mixing detergent with vinegar. Dishwasher soap neutralizes the acid, so the vinegar cycle becomes useless.
• Running a cold water cycle. Hot water is essential for dissolving mineral deposits. Use the hottest setting available.

When This Natural Method Works Best

This two-cycle approach is suitable for all standard residential dishwashers with either manual or self-cleaning filters. For households that run the dishwasher daily, a vinegar-and-baking-soda clean once a month keeps mineral buildup and odors in check without spending $10–$15 on commercial cleaning tablets. If you prefer a complete product-based approach, our testing of the best dishwasher detergents covers options that tackle both cleaning and maintenance.

A note on compatibility: vinegar is acidic and generally safe for stainless steel and plastic interiors. Avoid using it on aluminum racks (remove them first if your model allows) and check the door gasket for cracks before any vinegar exposure — damaged seals may degrade faster with acidic contact. Replace a worn gasket first.

Checklist for a Successful Natural Clean

• Scrape and clear bottom debris
• Clean the filter (soak + scrub)
• Clear spray-arm holes
• Scrub door gasket
• Run vinegar cycle (hot water, Air Dry, no detergent)
• Run baking soda cycle (short hot, Air Dry, no detergent)
• Air dry with door open afterward