We dealt with this all the time at a place I worked at, we sort of solved this issue adding a dirty rack right above the dishwasher, with a sign above it, saying:
Your Mom/Wife/Husband doesn't live here to pick up after you.
If they aren't in the dishwasher they don't get cleaned, please put your own dishes in the dishwasher.
We placed the offending dishes, utensils, and cups in there, and kept putting them back there till they got the hint.
Another place I worked at closed and locked the kitchen with a sign on the door saying:
If you want to act like children, you need to ask an adult to use the kitchen.
Signed: The Owner
It all depends on how stringent or easy going you wish to be.