The dishwasher was crammed full of dirty dishes, company would be arriving shortly, and (wouldn’t you know it) I had only enough detergent to fill one of the two dispensers in my dishwasher. I decided to use what I had and hope for the best.
Amazingly, my dishes got just as clean as when I previously would fill both receptacles. To my disgrace, I'd been filling both cups since we bought this house nearly 16 years prior. I didn’t have an owner’s manual and it never occurred to me to research just how much detergent to use. A closer look revealed directions embossed right into the inside surface of the door.