Rotate Super Premium Cat Food
(Indianapolis, IN USA)
I have found that both my dogs and cats do better when I rotate through different brands of super premium foods.
My holistic veterinarian started me on this path. He said that no manufactured food is perfect, there are pluses and minuses to each one, so switching periodically minimizes long term exposure to the minuses.
I have found that knowing the calories per cup of food equals less food needed per serving - this makes for less litter box clean up, and easier puppy training.