Tired of eating off those dirty dishes that you thought were clean (already run through the dishwasher)? Tired of emptying a dishwasher full of rinsed but unclean dishes and putting them away before you realize that they have not yet been washed?
Save yourself the trouble of ever going through that again, and use Marash Girl's signal!
After emptying her dishwasher, Marash Girl immediately fills the soap dispenser with dishwasher soap and firmly closes the dispenser. That's the signal.
From then on, any dishes in the dishwasher are known to be dirty. How? Just check the dispenser! If it's closed, the dishes are dirty.
And likewise, if the soap dispenser is open and empty, that's your signal that the soap has been used, that all of the dishes in the dishwasher are clean and ready to be used.