Purina Mainstay Review

Because Purina Mainstay dog food is lower in protein, it is easier on the kidneys, AND an added benefit to the lower protein content is a less-caustic urine which is the cause of those ugly yellow pee spots on your lawn!  Ever since I started feeding it to my dogs, the yellow spots are gone.  I hope Purina never stops making it, and I panic every time my store is out.