I have fed Lucky Frisky's dry for some time, but lately I have noticed clumps of hair on the carpet. Of these dry foods, which one is better, Nutro, Little Buffalo, Science Diet, Purina Pro Plan. Pleas advise, I want him to have a good food. Plus, I have noticed he poops more. I know it is the food. I want him to have one for hair balls, plus one for urinary. Is there one for both?