Olivia is the pickiest eater ever, and the only thing I can get her to eat without havng to hand feed her is Royal Canin Yorkie. The kibbles are small, the best I can compare them is that they are about the size of the nail on my pointer finger.
But she will only eat certain pieces of it. She picks up pieces and them puts them back down on her placemat, and she will not eat them, no matter what I do to make her try. I guess those are the "unsatisfactory" pieces