If you’ve ever thought, “My dishwasher stinks!”, you’re definitely not alone. A stinky dishwasher is one of the most frustrating cleaning issues because it’s supposed to clean things, right? But over time, leftover food, soap scum, grease, and even mold can build up inside, leaving behind an unpleasant odor.
In this guide, you’ll learn how to clean a stinky dishwasher step by step using easy, proven, and affordable methods. Whether your dishwasher stinks all the time or only after running, we’ll help you identify the cause and fix it fast.
Let’s start with the first essential fix!
1. Clean the Dishwasher Filter (The Hidden Stink Source)
One of the biggest reasons your dishwasher stinks is a dirty or clogged filter. Most people forget it exists, but this tiny part traps leftover food, and if it’s not cleaned regularly, it starts to smell like garbage.
How to Clean It:
- Locate the filter at the bottom of your dishwasher (under the spray arm).
- Twist and pull it out gently.
- Rinse it under hot water and use a soft toothbrush to scrub off any food bits.
- For a deep clean, soak it in white vinegar for 10–15 minutes.
- Put it back securely before running the dishwasher again.
Why This Works:
A clean filter ensures water drains properly and prevents buildup of smelly gunk.
2. Wipe Down the Interior Walls and Door Seals
If your dishwasher stinks, it’s not just the filter, it’s also the gunk hiding in the corners. Food particles and soap residue stick to the interior walls and seals, especially around the edges of the door.
How to Clean It:
- Mix a solution of warm water and a few drops of dish soap or vinegar.
- Use a microfiber cloth or sponge to wipe down the walls, racks, and especially the door edges.
- Pay extra attention to the rubber seal (gasket) around the door, it’s a common hiding spot for mold and mildew.
- Use a toothbrush for small crevices.
Pro Tip:
Dip a cotton swab in vinegar to get into tight spots and deodorize effectively.
Why This Works:
Mold and mildew love moist, dark places, like the rubber gasket. Cleaning it removes hidden odor sources and helps your dishwasher seal properly.
3. Clean the Spray Arms to Boost Water Flow
If your dishwasher stinks, it might not be rinsing well, and clogged spray arms are often to blame. When food debris blocks the tiny holes, water can’t circulate properly. The result? A lingering smell and poorly cleaned dishes.
How to Clean It:
- Remove the top and bottom spray arms (most twist off or pop out easily, check your manual).
- Use a toothpick or paperclip to clear out any gunk or buildup from the spray holes.
- Soak the arms in warm water with a splash of vinegar for 15–20 minutes.
- Rinse and reattach.
Why This Works: Clogged spray arms reduce water pressure and cleaning power. When water can’t flow, leftover food starts to rot, causing that funky odor you’re trying to eliminate.
Pro Tip:
Do this monthly if you use your dishwasher daily, especially if you rinse dishes only lightly or not at all.
4. Deodorize the Dishwasher with Vinegar and Baking Soda
If your dishwasher stinks, this two-step natural deodorizing combo is one of the easiest and most effective tricks out there.
Step-by-Step Instructions:
- First:
Place a dishwasher-safe bowl or cup filled with 1 cup of white vinegar on the top rack.
➤ Run a hot water cycle (no detergent, no dishes). - Then:
Sprinkle 1 cup of baking soda directly on the bottom of the empty dishwasher.
➤ Run a short hot cycle.
Why It Works:
- Vinegar breaks down grease, grime, and lingering food particles.
- Baking soda neutralizes odors and freshens the interior.
- Combined, they act as a natural deodorizing powerhouse.
Pro Tip: If your dishwasher stinks even after cleaning, repeat this vinegar + baking soda treatment once a week for a month, especially if your unit hasn’t been cleaned in a while.
5. Keep the Dishwasher Smelling Fresh Between Deep Cleans
Even after removing buildup and odors, some habits help ensure the smell doesn’t come back.
Daily & Weekly Maintenance Tips:
- Rinse food scraps off plates before loading.
- Leave the door slightly open after a cycle to let moisture escape.
- Clean the drain filter weekly, especially if you cook greasy meals often.
- Use a dishwasher cleaner or vinegar rinse once a month.
- Run hot water in the sink before starting the dishwasher (helps activate detergent).
Pro Tip: If your dishwasher stinks again, it may be a sign of a clog or hard water buildup in the drain hose or spray arms , schedule a professional cleaning if regular maintenance doesn’t solve it.
FAQ’s
Why does my dishwasher smell so bad?
Common culprits include leftover food particles, a dirty filter, clogged spray arms, or bacteria from moisture buildup.
How often should I clean my dishwasher filter?
AAt least once a week if you use your dishwasher daily; every two weeks if you use it occasionally.
Is it safe to use vinegar and baking soda in my dishwasher?
AYes! It’s a natural and effective way to deodorize and break down grime without harsh chemicals.
Can I use bleach instead of vinegar?
Bleach can be used sparingly, but avoid it if your dishwasher has a stainless-steel interior or you’re using vinegar, as combining them creates toxic fumes.
What if my dishwasher still stinks after cleaning?
If the odor persists, check for a clogged drain hose or mold buildup in hidden parts of the machine. A professional cleaning might be necessary.
Final Thoughts: Say Goodbye to a Stinky Dishwasher for Good
Now that you know how to clean a stinky dishwasher using natural methods and smart maintenance tips, your kitchen will smell fresher and feel cleaner every day.
But if your dishwasher still smells bad or you’re too busy to deep clean it yourself, don’t stress.
Hellamaid is here to help.
We offer expert kitchen and appliance cleaning as part of our trusted home cleaning services in Houston, Austin, San Antonio, Dallas, and Fort Worth.
Book your professional cleaning today at Hellamaid and enjoy a truly spotless home, no odors, no stress.
