One tip I have for dishwashers: use the soap dispenser as your dirty/clean indicator.
When you empty the clean dishwasher, immediately fill and close the soap dispenser. As long as you do that, you now have a reliable indicator for everyone of clean (open) or dirty (closed).
When you empty the clean dishwasher, immediately fill and close the soap dispenser. As long as you do that, you now have a reliable indicator for everyone of clean (open) or dirty (closed).