It is a common misconception that a dishwasher cleans itself while it cleans your dishes. Over time, grease, food particles, and mineral deposits from hard water accumulate in the internal components. At Queen Anne Cleaning Services, we recommend a regular maintenance routine to keep your appliance smelling fresh and operating at peak efficiency.
Quick Answer: Clean the Filter, Wipe Seals, and Run a Cleaning Cycle
To effectively clean a dishwasher, remove and rinse the manual filter, wipe the rubber door gaskets to remove mold, and run a high-heat cycle with a bowl of white vinegar or a dedicated dishwasher cleaner.
Why Dishwashers Still Need Cleaning
Dishwashers act as a giant trap for organic matter. While detergent breaks down most grease, bits of food often get caught in the filter or the spray arm nozzles. If left alone, these particles begin to rot, causing odors and eventually clogging the drainage system.
Signs Your Dishwasher Needs Attention
You should clean your unit immediately if you notice:
- A lingering “damp” or “sour” smell.
- Gritty residue or white spots on glassware.
- Standing water at the bottom of the tub after a cycle.
- Visible mold or slime on the rubber door seals.
Step-by-Step Dishwasher Cleaning
Follow these professional steps to restore your dishwasher’s performance:
1. Remove and Rinse the Filter
The filter is usually located at the bottom of the dishwasher tub. Twist to unlock it and pull it out. Rinse it under hot running water using a soft brush to remove any trapped debris or oily film.
- Specialist Tip: If the filter feels slimy, soak it in warm soapy water for 10 minutes before scrubbing.
2. Wipe Door Seals and Edges
The rubber gasket around the door and the very bottom of the door are prime spots for mold growth because they remain damp. Wipe these areas with a damp cloth soaked in a mixture of warm water and vinegar.
3. Clean Spray Arms
Check the tiny holes in the plastic spray arms. If they are clogged with mineral deposits or seeds, use a toothpick or a small piece of wire to gently clear the blockage. This ensures your dishes receive maximum water pressure.
4. Run a Vinegar or Dishwasher-Cleaning Cycle
Place a dishwasher-safe bowl filled with one cup of white vinegar on the top rack. Run a full cycle on the hottest setting. The vinegar will break down grease and dissolve limescale.
- Note: Do not use detergent during this specific cycle.
5. Wipe the Exterior Controls
Don’t forget the outside. Use a microfiber cloth and a mild cleaner to wipe down buttons, handles, and the top edge of the door where steam escapes and leaves water marks.
What Causes Dishwasher Odors?
Food Trapped in the Filter
This is the number one cause of smells. The filter is designed to catch large food scraps so they don’t clog your pipes; however, these scraps will begin to decay within days if not removed.
Grease Buildup
If you frequently use low-temperature cycles, grease may not fully dissolve. It coats the interior walls and the drain hose, creating a “fatty” odor that is difficult to eliminate without a high-heat vinegar cycle.
Poor Drainage
A kinked drain hose or a partial clog in the kitchen sink’s garbage disposal can cause dirty water to back up into the dishwasher, leaving a stagnant pool of water at the bottom of the tub.
How Often Should You Clean a Dishwasher?
Monthly Maintenance
For the average household, we recommend cleaning the filter and running a vinegar cycle once a month. This prevents buildup before it becomes a major problem.
After Heavy Use or Odors
If you have just hosted a large gathering or notice a smell, perform a quick filter rinse immediately. If your water is “hard” (high mineral content), you may need to clean the unit every two weeks to prevent white film on your dishes.
FAQ
How do I clean a smelly dishwasher?
The most effective way is to clean the filter first, as that is the source of 90% of odors. Follow this with a high-heat cycle using vinegar or a citric acid-based dishwasher cleaner.
Can vinegar clean a dishwasher?
Yes. White vinegar is an excellent, food-safe acid that dissolves mineral deposits and cuts through grease. However, avoid using it every day, as the acidity can eventually degrade some types of rubber gaskets over several years.
Should I clean the dishwasher filter?
Absolutely. Unless you have a very old model with a “hard food disposer” (which sounds like a loud grinder), your dishwasher has a manual filter that must be cleaned by hand.
Why is my dishwasher leaving residue?
This is usually caused by a clogged filter, blocked spray arms, or hard water. Cleaning these components typically resolves the issue and returns your glasses to a “crystal clear” state.
Does your kitchen need a professional touch?
Queen Anne Cleaning Services offers deep-cleaning packages for all major appliances. Let us handle the grime so you can enjoy a spotless, sanitary home.
Contact Queen Anne Cleaning Today