Alley Cat is very low-quality and not very healthy. Here are the ingredients of one formula:Alley Cat Chicken and Tuna Flavors Dry Cat Food Ingredients:
Ground yellow corn, corn gluten meal, soybean meal, chicken by-product meal, animal fat preserved with mixed tocopherols (source of vitamin E), ocean fish meal, tuna meal, calcium carbonate, phosphoric acid, salt, choline chloride, brewers dried yeast, dicalcium phosphate, animal digest, tetra sodium pyrophosphate, taurine, zinc sulfate, ferrous sulfate (source of iron), niacin, manganese sulfate, vitamin E supplement, red 40, calcium pantothenate, L-alanine, copper sulfate, vitamin A supplement, rosemary extract, pyridoxine hydrochloride (source of Vitamin B6), vitamin D supplement, biotin, menadione sodium bisulfite complex (source of vitamin K activity L-4511
Personally I use Wellness, Innova and By Nature for my cats. I would recommend the By Nature or By Nature Organics, they are very very good foods and plus they are now selling them at Petsmart stores so they're easier to find.