I buy primarily Purina Cat Chow indoor formula.

Here's the ingredients:

Corn meal, poultry by-product meal, corn gluten meal, soy flour, animal fat preserved with mixed-tocopherols (form of Vitamin E), powdered cellulose, animal liver flavor, soybean hulls, malt extract, calcium carbonate, phosphoric acid, salt, choline chloride, potassium chloride, taurine, zinc sulfate, Vitamin E supplement, ferrous sulfate, manganese sulfate, parsley flakes, niacin, added color (Red 40, Yellow 5, Blue 2), copper sulfate, Vitamin A supplement, calcium pantothenate, thiamine mononitrate, riboflavin supplement, Vitamin B-12 supplement, pyridoxine hydrochloride, folic acid, Vitamin D-3 supplement, calcium iodate, biotin, menadione sodium bisulfite complex (source of Vitamin K activity), sodium selenite.