She is still not good at eating, but I have taught Sunna that she gets a treat for a clean dish. Wherever I am, she will come running to tell me something is wonderful! Then we go to the kitchen, I exclaim over the clean dish, and she gets a treat.
Doesn't matter why she thinks she gets the treat -- whether for eating or for the clean dish. She doesn't expect the treat unless the dish is clean after having her regular food in it. I can put in people leftovers, which she quickly gobbles, but she doesn't expect a treat after them.
Such a sweet, silly dog!