How to Clean a Dishwasher with Vinegar | The Right Way

Your dishwasher looks clean because it never actually gets dirty the way you’d expect — but a film of hard water, grease, and food debris builds up on the interior and the spray arms. The fix for that buildup is a vinegar cycle, and it takes about an hour with almost no effort from you.

This method works on standard household dishwashers. The key is running it completely empty, using plain white vinegar in its own container, and skipping detergent entirely.

What Vinegar Actually Does in a Dishwasher

Vinegar is an acid, and that acid dissolves mineral deposits and cuts through grease. But it’s a cleaner for the machine’s interior — it is not a detergent replacement. Dishes left inside will come out spotty or with food still stuck on them.

Think of the vinegar cycle as a deep clean for the dishwasher itself, something most manufacturers recommend doing every month or so to keep the machine working efficiently.

Vinegar Amounts and Where to Place It

Consumer guides differ slightly, but the range is consistent. Whirlpool’s instructions call for 2 cups (500 mL) of white vinegar, while other guides suggest 1 cup. Fill a dishwasher-safe container — a glass measuring cup works well — about two-thirds full if you’re not measuring exactly.

Where the cup goes is where the guides split:

• Lower rack: Whirlpool and Maytag both direct you to place the container on the lower rack of the empty dishwasher.
• Top rack: Several consumer guides, including HGTV, recommend the top rack instead.

Either placement gets the vinegar into the wash water. The container needs to be stable and upright so it doesn’t tip over during the cycle.

Step-by-Step: The Vinegar Cleaning Cycle

This is the sequence Whirlpool and Maytag both describe, with one preliminary step most guides include:

1. Empty the dishwasher completely. No dishes, no utensils, no racks of silverware left in place.
2. Clear the filter. Check the filter at the bottom of the tub and pick out any food bits, popcorn kernels, or paper labels that have collected there.
3. Pour 1–2 cups of white vinegar (use 2 cups, per Whirlpool and Maytag) into a dishwasher-safe cup or bowl.
4. Place the container upright on the lower rack, or the top rack if that’s the guide you’re following.
5. Run a normal cycle with no detergent. Do not fill the detergent dispenser, and do not use a pod.
6. Turn off heated dry. Several sources advise skipping the drying cycle during the vinegar wash.

When the cycle finishes, leave the door open and let the interior air-dry. Wipe down the door gasket and the detergent dispenser with a vinegar-dipped sponge if they still look filmed over — though some guides say to use soapy water on the door seal instead, since vinegar can degrade rubber over time.

Baking Soda Follow-Up and Common Mistakes

Whirlpool and Maytag both recommend a second cycle after the vinegar wash. Sprinkle 1 cup of baking soda across the bottom of the dishwasher, then run a hot water cycle. This neutralizes any lingering vinegar smell and helps deodorize the interior.

Most dishwasher-cleaning mishaps come down to a few avoidable errors:

• Leaving dishes inside. Vinegar doesn’t wash them; it cleans the machine.
• Adding detergent. Mixing vinegar with detergent can create a foamy mess and defeats the purpose of the rinse.
• Using heated dry. Several sources say to leave it off during the vinegar cycle.
• Skipping the filter. Trapped debris stays behind and the vinegar can’t do its job on the spray arms.
• Running vinegar every week. This is an occasional deep clean, not a weekly habit. Once a month is plenty, and some guides say less often.

If your dishwasher needs more than a monthly vinegar run to stay fresh, a deeper clean might be in order — or it might simply be time to upgrade the machine. Our tested picks for the best cleaning dishwashers cover models that handle hard water and heavy loads without the buildup.

Vinegar is cheap, non-toxic, and already in most kitchens. A cup of it in an empty machine is the simplest way to keep the dishwasher doing its actual job: getting the dishes clean.