Ah, Memories...
...My best cat friend, Tony, was a dishwasher inspector when he was little. I eventually had to train him that it was off-limits, because his very favourite thing was to curl up on the warm door when it was opened, and take himself a nice nap. What that meant was that kitty hair got on the door, and then into the sump, filter and pump areas. Not good for Mr. Dishwasher!