You need to have some testing done to ensure that it is safe for your own animal to eat it, IMHO. Unfortunately, there will be laboratories that do this for the different food companies. However usually the animals are kept comfortable and <obviously> well fed so they can see how the food is working.

I never have and never will buy Iams or Eukanuba..it is way too expensive for the ingredients listed on the package.

Have you seen the new brand-MULTICAT. It will make your thin cats muscle up and your fat cats slim down!