8 things you should be cleaning in your dishwasher (and how to do it right)

A little care goes a long way

Your dishwasher is one of the hardest-working appliances in your kitchen, but it needs care to stay efficient. Hidden food particles, grease, and mineral buildup can quietly reduce performance over time.

This guide reveals the eight most important parts you should clean regularly—plus step-by-step instructions, tools you’ll need, and expert tips to keep everything spotless. A cleaner dishwasher means cleaner dishes and a healthier kitchen.

Why dishwasher cleaning matters

We rely on dishwashers to clean up daily messes, but often forget they need cleaning too. Over time, grease, limescale, and food debris accumulate inside, creating foul odors and lowering efficiency.

A poorly maintained dishwasher may even shorten its lifespan. By learning to clean the right parts at the right frequency, you’ll prevent clogs, improve energy efficiency, and keep dishes sparkling. Regular maintenance ensures your appliance works its hardest for you.

Thing #1 – The dishwasher filter

The filter is the first defense against clogged drains, trapping food particles before they reach the pump. To clean, remove it carefully and rinse under warm water.

Use a soft brush to scrub away stubborn residue. A monthly cleaning—or more often if your dishwasher sees heavy use—keeps odors away and boosts performance. A clean filter means fresher smells, fewer blockages, and sparkling dishes every time.

Thing #2 – The spray arms

Spray arms power the cleaning process by shooting pressurized water onto dishes. Over time, small holes get blocked with food, grease, or hard water deposits, lowering water flow.

To clean, remove the arms and soak them in white vinegar overnight. Use toothpicks or a brush to unclog holes. Every six months—or sooner if performance dips—this routine ensures powerful sprays, residue-free dishes, and consistent results with every cycle.

Thing #3 – Door seals and gaskets

Dishwasher door seals are crucial for keeping water inside. Unfortunately, these rubber edges attract grime, soap scum, and even mold. Wiping them weekly with a damp cloth and mild dish soap preserves their watertight hold.

Don’t forget to clean the door’s inner edges too. Regular attention prevents mildew, leaks, and foul odors. Healthy seals not only extend your dishwasher’s life but also keep your kitchen dry and fresh.

Thing #4 – The drain and pump area

At the bottom of the dishwasher lies the drain, where wastewater exits. Food particles, grease, and foreign objects often accumulate here, leading to foul smells or even standing water.

Clear away visible debris regularly, and consult your manual before cleaning the pump. A quarterly inspection is ideal, or sooner if you notice drainage issues. Keeping this area clean prevents clogs, ensures proper water flow, and avoids costly malfunctions.

Thing #5 – The interior walls and bottom

Even though your dishwasher handles soap and water daily, its walls still collect grease, soap scum, and mineral buildup. Wiping the interior monthly with a cloth soaked in white vinegar or using a dishwasher cleaner removes hidden grime.

Pay attention to the bottom, where residue often settles. This quick task prevents odors, keeps the appliance looking fresh, and extends its lifespan while ensuring dishes always come out spotless.

Thing #6 – The detergent dispenser

The detergent dispenser is essential for releasing soap at the right time during cycles. Over time, residue and hardened detergent can block the compartment, stopping it from opening properly.

To clean, remove the dispenser if possible, then scrub with warm water and a small brush. A monthly routine—or whenever detergent sticks—guarantees proper release. Keeping it clean ensures optimal washing performance and avoids wasted detergent or under-cleaned dishes.

Thing #7 – The cutlery basket and racks

Cutlery baskets and dish racks hold utensils and plates, but their crevices trap leftover food, grease, and even rust spots. To clean, remove and wash them in warm soapy water, scrubbing corners with a brush for thoroughness.

Monthly cleaning prevents hidden debris from spreading odors or staining utensils. Clean racks also protect dishes from scratches and keep the dishwasher looking tidy, ensuring every load runs smoothly and hygienically.

Thing #8 – Hard water deposits and limescale

Hard water minerals often leave cloudy films on glassware and clog internal parts. Regular descaling keeps your dishwasher running efficiently. Use dishwasher-safe descaler tablets or run an empty hot cycle with two cups of white vinegar or a citric acid solution.

Quarterly cleaning—or more often in hard water areas—prevents buildup, protects heating elements, and maintains water flow. This step keeps dishes sparkling while extending your machine’s performance and lifespan.

Cleaning tools you’ll need

Having the right tools makes dishwasher cleaning easier and more effective. Keep soft brushes or old toothbrushes for scrubbing filters and crevices. Stock white vinegar and baking soda for natural cleaning power, along with mild dish soap.

Microfiber cloths are perfect for wiping seals and interiors. Dishwasher-safe bowls or containers help when soaking removable parts. Cleaner tablets add extra convenience. With these supplies, every cleaning task becomes faster, simpler, and more efficient.

Step-by-step monthly cleaning routine

A consistent monthly routine keeps your dishwasher fresh and high-performing. Start by removing and soaking the filter, then scrub the spray arms and detergent dispenser.

Wipe down door seals and the interior walls with vinegar or mild soap. Clean racks and baskets separately with warm water. Finally, run an empty hot cycle with vinegar. This step-by-step system prevents buildup, maintains efficiency, and ensures every load of dishes emerges sparkling clean.

Deep cleaning cycle tips

When your dishwasher needs more than a quick wipe, a deep clean works wonders. Run an empty cycle with two cups of white vinegar placed on the bottom rack, letting it dissolve grease and mineral deposits.

Follow with a sprinkle of baking soda and another hot cycle to deodorize. Skip detergent during these runs. This method refreshes the interior, eliminates odors, and restores peak performance without harsh chemicals or costly cleaners.

Troubleshooting common dishwasher issues

Sometimes problems signal it’s time to clean. If odors linger, check and rinse the filter, seals, and spray arms, then run a vinegar cycle. Poor cleaning often points to clogged spray arms or a dirty detergent dispenser.

Leaks may result from grime on door seals. Tackling these issues promptly with regular cleaning saves frustration, prevents costly repairs, and restores your dishwasher’s ability to deliver spotless dishes every cycle.

Maintaining your dishwasher between cleanings

Good daily habits make deep cleanings easier. Always scrape leftover food before loading dishes. Run the dishwasher at least once a week, even when not heavily used, to keep seals lubricated and the motor working smoothly.

Use high-quality detergents and rinse aids to reduce buildup and improve performance. By maintaining these simple routines, your dishwasher stays efficient, odor-free, and reliable while keeping your kitchen running effortlessly clean and organized.

Signs your dishwasher needs cleaning

Pay attention to early warning signs. Foul smells often mean the filter or drain needs attention. Cloudy glasses or dishes that don’t look clean suggest clogged spray arms or detergent issues. Visible grime inside, especially around the filter, signals it’s time to scrub.

Water pooling at the bottom indicates a blocked drain. Acting quickly on these red flags prevents bigger problems, saving time and money while keeping your dishwasher healthy. Also check out oven cleaning hacks that actually work.

Benefits of regular dishwasher cleaning

Cleaning your dishwasher isn’t just about appearances—it brings major benefits. Regular maintenance extends the appliance’s lifespan and prevents expensive repairs. Clean parts ensure better water flow and detergent release, so dishes come out spotless and hygienic.

Energy efficiency improves too, lowering utility bills. A fresh, odor-free dishwasher makes your kitchen feel cleaner overall. Once you’re done with this you can use this trick to a sparkling sink every time.

Get more kitchen savvy tips:

• 16 genius habits for a spotless fridge
• Air fryer smells? top tips to keep it fresh
• Air fryer secrets TikTok doesn’t want you to know

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This slideshow was made with AI assistance and human editing.