Science Diet.

Fluffy and Yoshi eat that new Light formula with hairball treatment kibble and wet, where as Lucky is on a special SD food. He eats the k/d because of his weight, he also gets the wet and dry of it.

Years ago I was told be my vet to use SD. Having males and already been through the crystal/pee problems because of high ash content. So we switched to SD and haven't looked back!

I have never seen or heard about that Chicken Soup food.