I used to feed Iams and I never had any problems. It's ok. In a grocery store that's the best you can get. But I switched because there are better foods to feed which are available in pet supply stores and on line. I'm currently feeding Innova and switching to California Natural because the Innova is too rich in calories. I still sometimes feed the Iams canned. Here is an example of some better brands.
Natural Balance (Do not get weight control. Difference is regular has 34% protein. Weight control only 27%)
Chicken, Chicken Meal, Brown Rice, Duck, Lamb Meal, Potatoes, Chicken Fat (preserved with mixed tocopherols, Vitamin E) Canola Oil, Oatmeal, Fish Meal, Brewers Yeast, Rosemary Extract, Dried Skimmed Milk, Natural Flavor, Dried Eggs, Carrots, Whole Ground Flaxseed, Kelp, DL Methionine, Dried Cranberries, Lecithin, Parsley Flakes, Tomato Pomace, Taurine, Zinc Sulfate, Vitamin E Supplement, Niacin, Vitamin B12 Supplement, Vitamin A Acetate, Riboflavin, Thiamine Mononitrate, Vitamin D3 Supplement, Biotin, Vitamin C Supplement, Yucca Schidigera, Folic Acid, Copper Sulfate, Manganous Oxide, Vitamin K1 Supplement, Pyridoxine Hydrochloride, Ethylene Dihydriodide, Sodium Selenite.
Natural Balance Venizon and Green Pea diet:
Venison, Whole Dried Green Peas, Venison Meal, Canola Oil, Venison Liver, Natural Flavor, Phosphoric Acid, Choline Chloride, Potassium Chloride, Sodium Chloride, Kelp, DL Methionine, Salmon Oil, Flaxseed Oil, Lysine, Rosemary Extract, Dried Parsley, Taurine, Zinc Sulfate, Vitamin E Supplement, Niacin, Vitamin B12 Supplement, Vitamin A Acetate, Riboflavin, Thiamine Mononitrate, Vitamin D3 Supplement, Biotin, Vitamin C Supplement (Ascorbic Acid), Yucca Schidigera, Folic Acid, Copper Sulfate, Manganous Oxide, Vitamin K1 Supplement, Pyridoxine Hydrochloride, Ethylene Dihydriodide, Sodium Selenite
Innova:
http://www.naturapet.com/display.php...d%3D%272%27%5D
California Natural:
http://www.naturapet.com/display.php...%3D%2772%27%5D
Named meat sources and named organs such as chicken liver are preferable to by-products and whole grains are preferable to grain fractions. Ideally grains should be very minimal in a cat's diet.