I can't comment about Purina food when it comes to poultry food because I've only had chickens a little over a month now and I've been using manapro and tsc brand. When it comes to their pet food for dogs and cats the number one ingredient is CORN. Many animals can have an allergy to certain grains. Corn is one of the cheapest grains around and with their prices on dog and cat food I feel like it's a rip-off. I started feeding my dog Taste Of The Wild dry food also found at TSC. The number one ingredient in that brand can be BUFFALO, SALMON< etc. They use no grains in their foods. It is more expensive but when you think of quality ingredient it's really not. Higher quality foods contain higher quality ingredients and my animals actually will eat less and get full faster.