· Davia Murnell · Home Cleaning · 19 min read
How To Clean The Inside Of A Dishwasher

Sparkling Clean: How To Clean The Inside Of Your Dishwasher
My dishwasher works hard to keep my plates and glasses shining. But sometimes, it needs a little help to stay clean itself. Have you ever noticed a lingering smell or residue on your “clean” dishes? This often means it is time to clean the inside of a dishwasher. A neglected dishwasher can harbor food particles, grease, soap scum, and mineral deposits. These buildups hinder its performance and can even lead to odors.
Maintaining a clean dishwasher improves its efficiency and extends its lifespan. It also ensures your dishes truly get spotless with every wash. This comprehensive guide will show you how to clean the inside of your dishwasher. We will cover everything from routine maintenance to deep cleaning specific components. You will learn the best methods, tools, and natural cleaning solutions. Get ready to make your dishwasher sparkle and your dishes shine.
Takeaway:
- Regularly clean your dishwasher to prevent odors and improve cleaning performance.
- Focus on the filter, spray arms, and interior walls during cleaning.
- Vinegar and baking soda are effective, natural cleaning agents.
- Address specific issues like mold or hard water buildup promptly.
- Maintain a consistent cleaning schedule for lasting freshness.
To clean the inside of a dishwasher, first remove all items and visible debris. Then, disassemble and clean the filter, spray arms, and drain area. Finally, run an empty hot water cycle with a cleaning agent like white vinegar or baking soda to sanitize and remove residues.
Why Your Dishwasher Needs Regular Cleaning
You might think your dishwasher cleans itself because it uses soap and hot water. However, this is not the case. Over time, food particles, grease, soap scum, and mineral deposits build up inside the machine. These residues cling to the walls, racks, and internal components. This buildup prevents your dishwasher from performing its best.
A dirty dishwasher affects the cleanliness of your dishes. It can leave behind gritty residue or a dull film. This also creates an environment where mold and mildew can grow. Neglecting regular cleaning leads to unpleasant odors and reduced efficiency. Your dishwasher works harder to clean dishes, which can increase energy consumption.
Signs Your Dishwasher Needs Cleaning
Knowing when your dishwasher needs a good cleaning is important. I always look for a few key indicators. If your dishes come out with food bits still attached, that is a clear sign. A cloudy film on your glassware also suggests a problem.
Unpleasant smells coming from the dishwasher, even when empty, are another big red flag. You might also see visible gunk or grime on the interior walls. If you notice any of these signs, it is definitely time for a thorough cleaning. Addressing these issues early keeps your dishwasher running well.
Benefits of a Clean Dishwasher
Cleaning your dishwasher offers many advantages. First, your dishes will come out truly spotless. You will notice a shine on your glasses and cutlery you might have forgotten. Second, a clean dishwasher means no more strange smells lingering in your kitchen. This improves the overall freshness of your home.
Beyond aesthetics, cleaning helps your appliance last longer. It prevents wear and tear caused by buildup on moving parts. A clean dishwasher also uses less energy because it runs more efficiently. Think of it as a small investment in the longevity and performance of a key kitchen appliance.
Essential Tools and Supplies for Dishwasher Cleaning
Before you start, gather all the necessary items. Having everything ready makes the cleaning process smooth. You likely have most of these items already in your home. I keep a dedicated set of cleaning tools for appliances, which makes things easier.
You do not need many specialized items to clean your dishwasher. Simple household products often work best. Always wear rubber gloves to protect your hands from cleaning solutions and debris. This keeps your hands clean and safe.
Here is a list of what you will need:
- White Vinegar: This is an excellent natural cleaner. It dissolves mineral deposits and acts as a deodorizer. I find it works wonders on hard water stains. You can learn more about its use specifically for dishwashers by reading our guide on how to clean dishwasher with vinegar.
- Baking Soda: A powerful deodorizer and gentle abrasive. It helps scrub away grime and absorb odors. For deeper insights, check out our article on how to clean dishwasher with baking soda.
- Dish Soap: For wiping down surfaces and loosening stubborn grime.
- Old Toothbrush or Small Brush: Great for scrubbing tight spots and crevices.
- Microfiber Cloths or Sponges: For wiping down surfaces without scratching them.
- Rubber Gloves: To protect your hands.
- Paper Towels: For quick cleanups of debris.
- Pliers (optional): Sometimes needed to remove stubborn nuts on spray arms.
Having these items on hand ensures you are prepared for a thorough cleaning session. Make sure your supplies are easily accessible to avoid interruptions during the process. This preparation saves time and effort in the long run.
Step-by-Step Guide to Deep Cleaning Your Dishwasher’s Interior
Now, let’s get into the main task: deep cleaning the inside of your dishwasher. This process takes a bit of time but yields significant results. I follow these steps every few months to keep my dishwasher in top shape. A thorough cleaning ensures every part gets attention.
Always begin with an empty dishwasher. Remove all dishes, racks, and cutlery baskets. This provides clear access to all interior surfaces and components. It also prevents any accidental damage to your dishes.
Cleaning the Dishwasher Filter
The filter is one of the most important parts to clean. It traps food particles, preventing them from recirculating. A clogged filter is a common reason for dishes not getting clean. I always start here because it makes the biggest difference. You can find more detailed instructions on how to clean filter in dishwasher.
- Locate the Filter: Most modern dishwashers have a cylindrical filter at the bottom, usually under the lower spray arm. Older models might have a flat filter.
- Remove the Filter: Twist or unclip it to remove it. Some filters have multiple parts; take them all out.
- Rinse Under Water: Hold the filter under warm running water to remove loose debris.
- Scrub with Brush: Use an old toothbrush and a little dish soap to gently scrub the mesh. Make sure to get into all the crevices.
- Rinse and Replace: Rinse thoroughly until clean. Reassemble the filter parts and place them back in the dishwasher.
Tackling Spray Arms and Drains
The spray arms have small holes that can get clogged with hard water deposits or food bits. This stops water from reaching all your dishes. The drain area also collects debris. I make sure to check these areas every time I clean. For issues with drainage, our guide on how to clean dishwasher drain offers more help.
- Remove Spray Arms: Unclip or unscrew the upper and lower spray arms. They usually twist off easily.
- Clear Clogs: Use a toothpick, paperclip, or small brush to clear any debris from the spray arm holes. Hold them under running water to flush out particles.
- Clean Around Drain: Wipe down the area around the drain at the bottom of the dishwasher. Remove any visible food scraps or sludge. You can use a damp cloth or paper towel. For tougher clogs, you might need to use a specialized cleaner. If you see black stuff, check out our tips on how to clean black stuff in dishwasher.
- Check Heating Element: The heating element is usually at the bottom. Wipe it clean if it has any visible residue. You can find more on how to clean dishwasher heating element.
- Reattach Components: Once clean, reattach the spray arms and ensure they can spin freely.
Wiping Down the Interior Walls and Door
The inside walls and door seal are often overlooked. Food splatter and soap scum build up here. These areas can also be breeding grounds for mold. I pay close attention to these spots.
- Wipe Interior Surfaces: Use a damp microfiber cloth with a little dish soap to wipe down the inside walls and the door. Pay attention to corners and crevices where grime accumulates.
- Clean Door Seal: The rubber gasket around the door can collect a lot of grime and mold. Use a damp cloth or an old toothbrush to scrub this area. Pull back the seal gently to clean underneath it. Mold can be a specific problem, so consult how to clean mold in dishwasher if you find it.
- Clean Detergent Dispenser: Wipe out any caked-on detergent or softener residue from the dispenser. Ensure the dispenser door opens and closes smoothly.
Natural Cleaning Solutions: Vinegar and Baking Soda Power
After manually cleaning components, it is time for a deep wash cycle. Natural cleaners like vinegar and baking soda are highly effective. They are also safe for your appliance and the environment. I prefer using these because they do not leave harsh chemical residues. They are excellent for a deep clean dishwasher.
These methods sanitize, deodorize, and break down mineral deposits. You can choose to use them separately or together for a more powerful clean. Each has its unique benefits.
Using White Vinegar for Odors and Mineral Buildup
White vinegar is a natural acid. It excels at dissolving hard water stains, soap scum, and grease. It also acts as a powerful deodorizer. This is my go-to for general maintenance and removing smells. For even more detailed steps, check out our guide on how to clean dishwasher with vinegar.
- Place Vinegar in a Bowl: Fill a dishwasher-safe bowl or cup with about two cups of white vinegar.
- Place in Dishwasher: Set the bowl on the top rack of your empty dishwasher. Do not add any dish detergent.
- Run Hot Cycle: Close the dishwasher and run a hot water cycle. The steam will release the vinegar, which cleans and deodorizes the interior.
- Air Dry: Let the dishwasher air dry or wipe down the interior with a clean cloth. The vinegar smell will dissipate quickly.
The Power of Baking Soda for Stains and Smells
Baking soda is a mild abrasive and an excellent odor absorber. It is perfect for tackling stains and unpleasant smells. I often use baking soda when my dishwasher has a distinct odor. It neutralizes rather than just masking smells.
- Sprinkle Baking Soda: After the vinegar cycle (or as a separate cleaning method), sprinkle one cup of baking soda across the bottom of the empty dishwasher.
- Run Short Hot Cycle: Run a short, hot water cycle. This helps the baking soda work into any remaining grime and absorb odors.
- Wipe Down: Once the cycle finishes, wipe down the interior to remove any residue.
Combining Vinegar and Baking Soda
For a truly deep clean, combining vinegar and baking soda can be very effective. This method leverages the strengths of both ingredients. The reaction creates a fizzing action that helps lift stubborn grime. This is often recommended when you need to clean a smelly dishwasher how to deep.
- Vinegar Cycle First: Follow the steps for the white vinegar cycle first.
- Baking Soda Second: After the vinegar cycle completes, sprinkle baking soda on the bottom of the dishwasher.
- Second Short Cycle: Run a second short, hot water cycle with the baking soda.
- Wipe Clean: Wipe down the interior of the dishwasher once the cycle is done. This combination tackles a wide range of issues. You can find more details on how to clean dishwasher with vinegar and baking soda.
Addressing Specific Dishwasher Issues
Sometimes, your dishwasher faces more particular challenges. These can include stubborn mold growth, hard water scale, or persistent bad smells. Knowing how to tackle these specific problems ensures your dishwasher remains clean and functional. I have learned that quick action prevents minor issues from becoming major problems.
Ignoring these issues can lead to reduced performance and potential damage to your appliance. Each problem requires a slightly different approach.
How to Clean Mold in Your Dishwasher
Mold can grow in damp, dark places. Your dishwasher, especially around the door seal, can be a prime spot. It often looks like black or greenish spots. Mold causes bad smells and is unhealthy. I make sure to check for mold regularly. You can find detailed instructions on how to clean mold in dishwasher.
- Safety First: Wear gloves and ensure good ventilation.
- Remove Visible Mold: Use a cloth dipped in white vinegar or a mild bleach solution (1 part bleach to 10 parts water) to wipe away visible mold. Pay close attention to the rubber gaskets around the door.
- Scrub Crevices: Use an old toothbrush to reach into crevices and under the seal.
- Run a Hot Cycle: Once visible mold is gone, run an empty hot cycle with a cup of vinegar on the top rack. This helps sanitize the interior.
- Prevent Recurrence: After the cycle, leave the dishwasher door ajar for a while to allow it to air dry completely. This prevents mold from returning.
Removing Calcium Buildup and Hard Water Stains
Hard water leaves behind mineral deposits, primarily calcium, and magnesium. These show up as white, chalky residue. This buildup can clog spray arm holes and make the interior look dull. I often deal with this due to hard water in my area. Our guide on how to clean calcium buildup in dishwasher offers more in-depth advice.
- Vinegar Rinse: The best way to combat hard water is with white vinegar. Place two cups of white vinegar in a dishwasher-safe bowl on the top rack.
- Hot Cycle: Run a hot water cycle without detergent or dishes. The vinegar’s acidity dissolves mineral deposits.
- Repeat if Necessary: For severe buildup, you might need to repeat this process.
- Wipe Down: After the cycle, wipe down any remaining residue with a damp cloth. Citric acid powder can also be very effective; read more on how to clean dishwasher with citric acid.
Eliminating Lingering Odors
A smelly dishwasher is unpleasant. Odors usually come from trapped food particles, mold, or mineral buildup. Even after cleaning, a faint smell can sometimes persist. I use a multi-pronged approach to tackle persistent odors. For comprehensive advice on this, you can refer to our article how to clean a smelly dishwasher.
- Check Filter and Drain: Ensure the filter and drain are completely clean, as these are common sources of odors. Check for any sludge or blockages.
- Baking Soda Treatment: Sprinkle one cup of baking soda at the bottom of the empty dishwasher. Let it sit overnight to absorb odors. Run a short hot cycle in the morning.
- Citrus Peels: For a fresh scent, place lemon or orange peels in the silverware basket and run a short cycle. The citrus oils help neutralize odors and leave a fresh smell.
- Regular Maintenance: Implement regular cleaning habits to prevent odors from returning.
Maintaining Your Dishwasher’s Cleanliness
Cleaning your dishwasher is not a one-time event. Regular maintenance keeps it running efficiently and prevents major buildup. I have found that a little effort often saves a lot of trouble later. Consistent care makes sure your dishwasher stays spotless. This prolongs its life and ensures sparkling clean dishes every time.
Implementing a maintenance routine is simple. It involves a few quick actions after each use and a more thorough clean every month or so. These small steps add up to a big difference.
Daily Habits for a Cleaner Dishwasher
Small daily actions can significantly reduce buildup. These are simple routines that take only a few seconds. I make sure everyone in my household follows these steps.
- Scrape Plates: Before loading, scrape large food particles off plates. While modern dishwashers handle some residue, removing big pieces helps. This prevents blockages in the drain and filter.
- Wipe Down Door: After unloading, quickly wipe the inside of the door and around the seal with a damp cloth. This removes fresh splatters.
- Leave Door Ajar: After the wash cycle, leave the dishwasher door slightly ajar for an hour or so. This allows the interior to air dry. It prevents moisture buildup, which deters mold and mildew growth and helps eliminate moisture.
Regular Maintenance Schedule
Beyond daily habits, a routine cleaning schedule is essential. I aim for these intervals to keep my dishwasher in prime condition.
- Monthly Quick Clean: Run an empty cycle with white vinegar or a dishwasher cleaning tablet. This helps dissolve minor buildup and keeps odors at bay. This is a crucial step in how to clean your dishwasher DIY.
- Quarterly Deep Clean: Every three months, perform a full deep clean. This includes removing and scrubbing the filter, cleaning the spray arms, and wiping down all interior surfaces. Check for sludge in the drain area during this deeper clean. Our article on how to clean sludge from dishwasher can assist here.
- Annual Inspection: Once a year, consider checking the dishwasher’s pump area or having a professional inspect it. This ensures all components work properly. Learn more about how to clean dishwasher pump.
Proper Detergent Use
The type and amount of detergent you use affect your dishwasher’s cleanliness. Using too much or too little can lead to issues. I always follow the manufacturer’s recommendations.
- Use Quality Detergent: Choose a high-quality dishwasher detergent. Some detergents are better at preventing buildup than others.
- Correct Dosage: Do not overuse detergent. More is not better; it can lead to soap scum buildup. Follow the product’s dosage instructions.
- Rinse Aid: Use a rinse aid, especially in hard water areas. Rinse aid helps prevent water spots and speeds up drying. This means less standing water, which reduces the chance of mold.
- Check Salt Levels (if applicable): If your dishwasher has a salt dispenser for water softening, ensure it is filled. Proper water softening reduces mineral buildup.
Troubleshooting Common Cleaning Challenges
Even with regular cleaning, you might encounter specific issues. Knowing how to troubleshoot these challenges saves you time and frustration. I have faced many of these myself and found simple solutions. These tips help address tough spots and ensure smooth operation.
Preventing these issues is ideal, but quick problem-solving is also very helpful.
Dealing with Stubborn Food Particles
Sometimes, food particles get baked onto the interior walls or stuck in obscure spots. These can be tough to remove. I find a bit of elbow grease and the right tools work best.
- Pre-Soak: For very stubborn spots, try running a short hot water cycle with nothing but water. This helps soften dried-on food.
- Scrub with Brush: Use a stiff-bristled brush or an old toothbrush to scrub the affected areas. A paste of baking soda and water can provide extra abrasive power.
- Commercial Cleaners: If natural methods fail, consider a specialized dishwasher cleaner. These are designed to break down tough grime.
Preventing Drain Blockages
The dishwasher drain can get clogged with accumulated food particles and grease. This causes water to pool at the bottom or prevents proper draining. I always check the drain filter first.
- Regular Filter Cleaning: As discussed, clean your filter frequently. This is the primary defense against blockages.
- Avoid Pre-Rinsing Too Much: Surprisingly, some dishwashers rely on food particles to activate enzymes in the detergent. Excessive pre-rinsing can leave the detergent without enough “food” to work on, potentially leading to residue. Scrape, don’t rinse.
- Hot Water Flush: Periodically run a very hot cycle with an empty dishwasher. This helps flush out any lingering grease or debris in the drain line.
- Baking Soda and Vinegar: For minor clogs or to prevent them, pour ½ cup of baking soda down the drain, followed by 1 cup of white vinegar. Let it sit for 15-30 minutes, then follow with a hot water rinse cycle. This combination helps break down grease and buildup.
Addressing Metal Stains or Rust
If you see reddish-brown stains, it might be rust from old racks or even hard water with high iron content. These need specific attention. Our guide on how to clean stainless steel dishwasher provides broader information on keeping your appliance looking good.
- Identify Source: Check your dishwasher racks for rusted tines. If found, repair them with vinyl paint or replace the racks.
- Lemon Juice/Citric Acid: For minor rust stains on the interior, a paste of lemon juice and salt or a solution of citric acid can help. Apply, let sit, then scrub gently.
- Rust Remover (Appliance Safe): For persistent rust, use an appliance-safe rust remover. Follow product instructions carefully.
- Water Softener: If iron in your water causes rust, consider installing a water softener or using a rust-removing dishwasher additive.
FAQ Section
Q1: How often should I clean the inside of my dishwasher?
You should clean your dishwasher’s interior regularly. Aim for a quick cleaning every month, perhaps with vinegar or a commercial cleaner. A deeper clean, including the filter and spray arms, is best done quarterly. Consistent maintenance prevents major issues and ensures optimal performance.
Q2: Can I use bleach to clean the inside of my dishwasher?
Using bleach inside your dishwasher is generally not recommended. Bleach can damage stainless steel components and rubber seals over time. More importantly, never mix bleach with vinegar or other cleaners containing ammonia, as this creates dangerous fumes. Stick to vinegar, baking soda, or specific dishwasher cleaners for safety and effectiveness.
Q3: Why does my dishwasher smell bad even after cleaning?
A bad smell after cleaning often means hidden residue. Check the filter again thoroughly for tiny food bits or grease. Inspect the drain area for any sludge. Also, pull back the rubber seal around the door to ensure no mold is growing underneath. Running an empty cycle with baking soda overnight can help absorb lingering odors.
Q4: What are the best natural products to clean my dishwasher?
White vinegar and baking soda are the best natural products for cleaning your dishwasher. Vinegar is excellent for dissolving mineral deposits and deodorizing. Baking soda is a gentle abrasive that absorbs odors and helps lift grime. You can use them separately or together for a powerful, non-toxic cleaning solution.
Q5: Can I put dishes in the dishwasher when running a cleaning cycle?
No, you should not put dishes in the dishwasher when running a cleaning cycle. Cleaning cycles use strong solutions like vinegar or baking soda that are not meant for dishes. Running the cycle empty allows the cleaning agents to work effectively on all interior surfaces without interference from dishes or detergent.
Q6: How do I prevent hard water spots on my dishes and inside the dishwasher?
To prevent hard water spots, use a rinse aid in your dishwasher’s dispenser. Rinse aid breaks the surface tension of water, allowing it to sheet off dishes and interior surfaces more easily. Additionally, ensure your dishwasher’s water softener (if applicable) is filled with salt. Regular vinegar rinses also help combat mineral buildup.
Conclusion
Keeping the inside of your dishwasher clean is vital for its performance and your peace of mind. A clean dishwasher means truly clean dishes, no unpleasant odors, and a longer life for your appliance. We have explored every aspect of how to clean the inside of a dishwasher, from daily habits to deep cleaning specific components. You now know the importance of regular maintenance and how to use simple, effective solutions like vinegar and baking soda.
I encourage you to implement these cleaning tips into your home maintenance routine. Start by checking your filter and giving your dishwasher a good clean today. A little effort goes a long way in keeping this essential appliance running smoothly. Do not wait until you see cloudy dishes or smell foul odors. Take proactive steps to maintain a sparkling clean dishwasher, ensuring spotless results every time. Start your dishwasher cleaning journey today for a fresher kitchen and gleaming dishes!