This has worked better for our young heeler than some of the other treat dispenser type toys. He needed some encouragement initially, to push it, flip it and so on, but quickly got into it. We put it away between play sessions, to try and retain some of its novelty value and also because he would have just used it for chewing if it was out all the time.
Can be a bit messy, if the treat pieces are too small and Freddy gets excited chasing it , treats being scattered all over the tiles and forgotten. So treat size is important, you want them to come out as the dog plays, not too easily, but easy enough for them to notice them, eat them & to keep them interested.
I keep it in a bag, on the floor in the pantry, tucked under a shelf and Fred seeks it out himself, so I guess he rates it a good toy too.