I tried EVO to see if maybe it was the grain she was allergic to, but it didn't help at all (in fact, it kept getting worst). She's been on that food for about 3 weeks. I know it's not very long... but I just don't want to see things getting worst (although I'm not sure how much worst it can get, her stools are completely liquid now)
My vet suggested prescription hypoallergenic food. They have Science Diet and Hills, if I remember correctly.
I would rather feed my cats more natural food (with real meat, little corn, etc.) so I am also considering some pet store brands of hypoallergenic food. (I can't remember the exact brand, I'll look that up.) They were eating California Natural before I switched to EVO.