DIY Plumbing Installation/Repair How to Clean Dishwashers
How to Clean Dishwashers Print E-mail
Written by kenny   

clean dishwasher

Cleaning the dishwasher is not something too many people think to do. However, debris and deposits can build up over time and can reduce the dishwasher’s performance. Dishwashers do not need to be cleaned too often, but it is important to take the time to clean dishwashers in order to maintain optimum performance. Using dishwashers regularly will help to prevent food and debris from building up, which will reduce how often to clean dishwashers Also see how to install a garbage disposal.

Cleaning Dishwasher Materials:

  • Acidic Drink Mix (See Below for Options)
  • Rag or sponge
  • Mild spray cleaner
  • Screwdriver 
  • Needle nose pliers or toothpick

Cleaning Dishwasher Step #1:  Spinning Arms

Run the dishwasher and empty.

Check spinning arms.  Make sure holes are open so water can run through them.   Clear out any debris in these holes.  To do this, use needle nose pliers or a toothpick to chip away at the debris.  This will take a while.  Another option:  Drill a larger hole at the end of the arm.  Run the washer and then plug the bigger hole with a stainless steel screw.

Cleaning Dishwasher Step #2:  Clean Door and Front of Dishwasher

Wipe around the gasket and the edges of the door.  Just use a damp cloth and a mild spray cleaner.  Use an old toothbrush to get into the corners and up under the gasket.   Wipe down the controls with a mild cleaner. 

Cleaning Dishwasher Step #3: Clean Drain

Check around the drain at the bottom of the dishwasher for debris and deposit buildup.  This can clog the dishwasher.   To clean debris under the drain, unplug the dishwasher from the electrical outlet and from under the sink.

Remove the screws to disassemble the drain.  Put a piece of tape on the opening to prevent the debris from running down as you clean it.  With your fingers or a cloth, remove solid debris.   Use a brush to loosen and remove deposits.   Screw back together.  Do not screw them on too tight.  Plug the dishwasher back in.

Cleaning Dishwasher Step #4: Remove Hard Water Deposits

Run a cycle with a mild, food acid.  The following are great for this step:

  • Lemonade drink mix
  • Tang (powdered)
  • Lemon juice
  • Distilled white vinegar 
  • Dishwasher cleaning product

Do this after the above steps have been done.

Cleaning Dishwasher Step #5: Remove Mildew or Mold

Use an effective all natural cleaner to remove mildew or mold.  If you choose to use bleach, make sure to run it on a different cycle than the acid food mixture.  Never mix bleach with anything.  

Cleaning Dishwasher Step #6: Remove Rust Stains

Determine why there is rust.  If the finish is chipping or flaking off of the wire baskets, use paint-on sealant made for dishwasher racks.  Pull out racks and check the bottoms.  If the damage is severe, replace them.  If the rust is being caused by iron in your water, consider using filters to remove iron from the water. Use a dishwasher safe rust remover to remove the stains.

Cleaning dishwashers is something that does need to be done to ensure dishwashers will run smoothly for as long as possible.

Comments (1)
  • Elizabeth Vinje  - don't mix Ammonia and Bleach
    I just want to add onto your brief statement about not mixing acid and bleach. You actually get a chlorine gas forming which when inhaled can kill you, but at least damage to your lungs and mucus membranes. Ammonia is the worst thing you mix with bleach.
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