Has anyone tried this food for your cat? As some of you know..Jenna has a a poop problem for the past month. The vet keeps thinking it is worms because her poop was runny. I finally thought maybe is was her food (Purina Cat Chow Complete) and decided to change it. I got her some @ the vet and her poop was formed harder the next day. I need to find something cheaper besides the stuff at the vet. He said Wal-Mart would have some. Any suggestions?? Thanks