Need some ideas on how to encourage my kids to clean up after themselves?

I’ve tried everything it seems. They are older now (16, 14 and 11) so they get their own breakfasts, lunches and snacks. The biggest problem is that they leave cups, milk, plates etc. out. They don’t even bother to put things in the dishwasher.

I’ve asked them to pick up after themselves probably hundreds of times (not an exaggeration). I’ve tried paying them to stay tidy. I routinely rally them all and get a giant clean up done (as they moan and complain about how it isn’t their mess). I’ve assigned chores (that get ignored). It just keeps going back to stuff piled up.

One giant problem is that the mess is never anyone’s…know what I mean?

Any been there done that advice?