Started my family of four boys on KumpiKat a week ago, starting second small bag. Ages range from 10 mos to 15 yrs. Switched from Hills c/d -- no transitioning. No tummy troubles at all from anyone. Everybody just loves it, they are so excited about their food now! The oldest one really seems to like the small kibble, easier for him to eat. The baby drags the bag around the house, tearing at it to get to the food-I need to buy a container. All four are much perkier already, they are much more playful and eyes are brighter. Even the oldest one's eyes have cleared some, I even found him up on the bed the other day -- it's been years since he did that.
This is so much better food than I was feeding them (I'm sorry boys, I didn't know better). I really wasn't expecting to see any difference in such a short time, but I have.
Delivery and customer service are great. I have a 20# bag coming in a couple days - I don't want to run out!
I'll try to keep this updated if I see other changes in my babies. So far, a really good experience.