Save your money! Instead of buying pricey dishwasher cleaners, I’ll bet this is in your pantry, use white vinegar! Fill a cup with white vinegar. Place securely on the top rack of an empty dishwasher. Run on a normal cycle. The acidity in the vinegar eliminates mold, hard water deposits, and grime. These can all gum up your dishwashers inner working and affect its performance.