Poultry By-products: Poultry by-products are clean parts of slaughtered poultry such as heads, feet, and internal organs (like heart, lungs, liver, kidneys, abdomen, and intestines). It does not contain feathers.
ground yellow corn another cheap filler that can be hard to digest
Corn Gluten Meal: Corn gluten meal is the by-product after the manufacture of corn syrup or starch, and is the dried residue after the removal of the bran, germ, and starch.
Brewers Rice: Brewers rice is the small fragments of rice kernels that have been separated from larger kernels of milled rice.
Beef Tallow: Beef tallow is fat derived from beef liver
These are just a couple of the ingredients I researched and they are all just cheap fillers.
I highly recommend choosing 2-4 foods from Repers dry cat food list and sticking with a mix of those.