Deep Clean Dishwasher with Vinegar: Safe and Effective Method

Why vinegar works

Vinegar is a mild acid that dissolves hard water minerals like calcium and magnesium, which form the white scale you see on the tub, spray arms, and door gasket. It also cuts through grease and neutralizes odors, making it a versatile cleaner for the inside of your dishwasher.

Using vinegar is a low-cost, chemical-free method that is particularly effective if you have moderately hard water. For severe buildup, you may need to repeat the process, but for routine maintenance a monthly vinegar wash keeps the tub fresh and clean.

Before you start, check your dishwasher manual for any specific cleaning recommendations, because some manufacturers may advise against certain products. You can always refer to the best 24-inch built-in dishwashers to see what features to look for in a model that is easy to maintain.

• White distilled vinegar (plain, not diluted)
• Baking soda
• Dishwasher-safe cup or bowl
• Soft cloth or sponge
• Soft-bristled toothbrush (optional for tight spots)

Step-by-step vinegar wash

Start with an empty dishwasher. Remove any large food particles from the filter and the bottom of the tub. If the filter is clogged, clean it first by following the dishwasher filter cleaning guide.

Place a dishwasher-safe cup filled with white vinegar upright on the top rack. Use about one cup of vinegar for a standard-size machine; for a compact model, use a smaller amount. Run a normal or hot-water cycle, but do not add any detergent or rinse aid.

The vinegar will be dispersed during the wash and rinse phases, coating the interior and breaking down scale. After the cycle finishes, inspect the spray arms and gasket. If you still see mineral deposits, you can wipe them with a cloth dipped in vinegar.

For a deeper clean, you can also pour a small amount of vinegar into the bottom of the tub before running a second cycle, but be careful with rubber components. If your dishwasher has a stainless steel interior, vinegar is safe, but rinse it well afterward to avoid a lingering odor.

If you own a countertop or portable model, the same process applies. See our best countertop dishwashers and best portable dishwashers for models with easy-to-clean filters and interiors.

Finish with a baking soda rinse

After the vinegar cycle, sprinkle about one cup of baking soda across the bottom of the dishwasher. Run a short hot-water cycle to deodorize and remove any remaining vinegar smell. Baking soda also helps neutralize mild odors and adds a gentle abrasive action.

Do not combine baking soda and vinegar in the same cycle. The foam can overflow and damage the dishwasher. Use them in separate cycles as described here.

If you prefer, you can use a commercial dishwasher cleaner instead of baking soda, but baking soda is a non-toxic alternative. For more on natural cleaning, see our guide on how to clean the dishwasher tub and gasket with baking soda.

After the rinse, leave the door slightly open to let the interior dry completely, which helps prevent mold and mildew. For more on preventing odors, read how to remove dishwasher odors.

Precautions and when to skip vinegar

Do not use vinegar on aluminum parts, such as some spray arms or interior panels, because the acid can damage the metal. Also avoid vinegar on natural stone countertops or any stone components that might be part of the dishwasher exterior or nearby surfaces.

If your dishwasher has a rubber gasket, vinegar is generally safe, but prolonged exposure may degrade the rubber over time. Always rinse well after the cycle and dry the gasket with a soft cloth.

Never mix vinegar with chlorine bleach or other household cleaners; this can produce harmful fumes. Stick to the separate vinegar and baking soda routine.

If you live in an area with very hard water, monthly vinegar treatments may not be enough to prevent scale. In that case, consider a built-in water softener or a dishwasher with a water softener. Read about dishwasher water softener settings and what hard water does to a dishwasher for more details.

• Check your owner's manual for specific care instructions.
• Do not use vinegar in a dishwasher with aluminum or stone interior parts.
• Keep the vinegar cycle separate from a baking soda rinse.
• Do not mix vinegar with bleach or other cleaners.

How to keep the dishwasher clean longer

Preventing buildup is easier than removing it. ENERGY STAR advises scraping food off dishes instead of rinsing them, because rinsing adds to water and energy use. A clean filter and well-maintained spray arms are essential for efficient operation.

Running full loads is another way to reduce the number of cycles and the accumulated residue. ENERGY STAR notes that dishwashers use about the same amount of energy and water regardless of load size, so a full load is more efficient.

Inspect and clean the filter every few months, and remove debris from the spray arm holes. For a step-by-step, see our dishwasher spray arm cleaning guide.

If you notice a recurring film or spots on dishes, the problem might be related to your water chemistry. The EPA explains that water is a precious resource and using it wisely is important, so a properly maintained dishwasher also contributes to water conservation. For more on efficiency, review the ENERGY STAR dishwasher criteria.

What to pick for your use

Questions

Can I use any type of vinegar to clean my dishwasher?

Use white distilled vinegar, which is clear and has no added colorings or flavorings. Other vinegars, like apple cider or malt, may leave residues or stain the interior.

How often should I clean my dishwasher with vinegar?

Once a month is generally enough for households with normal to hard water. If you see visible scale or odors, clean more frequently or treat tough spots with a baking soda scrub.

Is it safe to run vinegar with a load of dishes?

No. Run the vinegar cycle with an empty dishwasher. Washing dishes with vinegar might leave a taste or affect the finish of your cookware, and the cleaner works better without dishes blocking the spray.

What should I do if my dishwasher still smells after vinegar and baking soda?

Check the filter, drain hose, and the area around the door gasket for trapped food or mold. Clean those parts manually and run another hot-water cycle with two cups of baking soda. If the smell persists, the drain line might be clogged and may need a thorough cleaning or service.

Can vinegar damage my dishwasher's stainless steel tub?

Vinegar is safe for stainless steel in the short term, but it can dull the finish if left on for a long time. Rinse it well after the cycle and wipe the interior dry to protect the surface.

Should I combine vinegar with dishwasher detergent?

No. Detergent is not needed during the vinegar cleaning cycle. Vinegar helps dissolve scale, while detergent is for washing dishes. Running them together may reduce the cleaning effect and create excessive suds.