While you’re at it, examine the detergent dispenser. If you notice buildup, that can throw off the soap distribution for future loads. Let the interior dry, and then use a Scrigit Scraper ($7 for two) to chisel off hardened detergent or food particles. Then suck up the debris with your vacuum’s crevice attachment. Once a month, pour a cup of white vinegar into a dishwasher-safe glass bowl and place it in the top rack and run the machine to give the whole thing a refresh.
