Answer Leslie, the manufacturer recommends that the unit be ran through a quick cycle with detergent and no dishes. If that does not improve the issue, then run a quick cycle with 2 cups placed in the lower rack and filled with white distilled vinegar. If that does not clear the filter, then the filter can be removed by removing the spray arm and the screws that secure it to the base. From there, you can use white vinegar and a soft brush to gently clean the filter. Read More... Answered by AppliancePartsPros.com | Wednesday, April 17, 2019