Why Your Dishwasher Needs Regular Cleaning
It's easy to assume a dishwasher cleans itself — after all, it runs through hot soapy water every day. But over time, food particles, grease, mineral deposits, and soap scum accumulate inside, reducing cleaning performance and causing unpleasant odors. A monthly deep clean keeps your dishwasher running efficiently and your dishes genuinely clean.
What You'll Need
- White distilled vinegar
- Baking soda
- Dish soap
- A soft brush or old toothbrush
- Microfiber cloths or paper towels
- A small bowl or dishwasher-safe cup
Step 1: Remove and Clean the Filter
The dishwasher filter is the most overlooked component — and often the source of bad smells. Most modern dishwashers have a removable cylindrical filter located at the bottom of the tub.
- Twist and lift out the filter assembly (check your manual if unsure).
- Rinse it under warm running water.
- Use a soft brush with a drop of dish soap to scrub away grease and food debris.
- Rinse thoroughly and reinstall.
How often: Clean the filter at least once a month, or more frequently if you run the dishwasher daily.
Step 2: Wipe Down the Door Seal and Edges
The rubber door gasket traps moisture, grime, and mold. Use a damp microfiber cloth with a small amount of dish soap to wipe along the entire seal, paying special attention to folds and creases. For stubborn buildup, an old toothbrush works well in tight spots.
Also wipe down the door interior edges, the soap dispenser compartment, and the spray arm holders.
Step 3: Check and Clean the Spray Arms
The spray arms (usually one at the bottom and one mid-rack) have small holes that can get blocked by mineral deposits or food particles.
- Remove the spray arms by unscrewing or unclipping them (varies by model).
- Hold them under running water and use a toothpick or thin wire to clear any clogged holes.
- Rinse and reattach securely.
Step 4: Run a Vinegar Cycle
White vinegar is an effective, food-safe way to dissolve mineral scale and deodorize the interior.
- Place a dishwasher-safe cup or bowl filled with 1–2 cups of white vinegar on the top rack.
- Run a hot water cycle (no detergent, no other dishes).
- The vinegar disperses during the cycle, breaking down grease and limescale throughout the tub.
Step 5: Follow with a Baking Soda Rinse
After the vinegar cycle, sprinkle one cup of baking soda across the bottom of the dishwasher tub. Run a short hot-water cycle. Baking soda neutralizes any remaining odors and gives the interior a fresh, clean finish.
Step 6: Wipe the Exterior
Don't forget the outside. Wipe down the control panel and door exterior with a damp cloth. For stainless steel finishes, use a microfiber cloth and wipe in the direction of the grain to avoid scratching.
Monthly vs. Weekly Maintenance Tips
| Task | Frequency |
|---|---|
| Wipe door seal | Weekly |
| Clean filter | Monthly |
| Run vinegar cycle | Monthly |
| Clean spray arms | Every 2–3 months |
| Descale (hard water areas) | Every 1–2 months |
Signs Your Dishwasher Needs a Clean Right Now
- Dishes come out with a film or spots
- A musty or sour smell when you open the door
- Visible grease or residue on the interior walls
- Spray arms feel blocked or dishes in certain areas aren't cleaned thoroughly
Keeping It Clean Long-Term
Scrape plates before loading (you don't need to rinse — just remove large food chunks), use the right amount of detergent, and run hot cycles regularly. These simple habits dramatically reduce buildup and keep your deep clean sessions quick and easy.