Can you get clean in a dirty tub? Neither can your plates. It’s important to clean your dishwasher every few months to make sure it can do its job as effectively as possible. If you don’t do this, it won’t be long before you start finding bits of food and residue on those plates and glasses that are supposed to be clean.
Remove and inspect the spray arms. To locate the spray arms, consult your owner's manual. Make sure that the holes are free of any food particles and buildup from soap. Tip: Carefully use a nail, paperclip or similar "tool" to clean the holes.
Clean the filter basket. This should be located at the bottom of your dishwasher. You'll be amazed at how much stuff is in there (especially the first time you clean it)! Check your owner's manual for how to open the filter basket.
Clean the interior of your dishwasher. Pour one cup of distilled white vinegar in the bottom of the dishwasher and run a complete cycle on the hottest temperature setting. This will get rid of the mineral deposits and scaling that dishwasher detergent can't remove.
Inspect the rubber gasket that waterproofs the dishwasher. Check your owner's manual to help you locate this part. Make sure the rubber is not cracked or broken. A worn gasket can lead to water leaks!
Check the dishwasher hoses. Locate your dishwasher hoses to inspect the connections from the dishwasher to the water line and the drain line. Make sure that the hoses look to be in good condition and that the connections look nice and tight.