Pros: Cheap and affordable
Cons: There's nothing healthy about GMO foods.
Purina is one of the few companies that refuse to produce an organic line of feeds. They are like many that hire scientists to do their own research and feed trials. Independent research feed trials performed longer than a 90 day period reveal that GMO toxins penetrate cells and damage reproductive systems of animals. Cancer is also linked to these toxins. They are not a trustworthy company.