I think the increased stool volume has to do with how the ingredients are processed not the quality of the ingredients. The Honest Kitchen and Grandma Lucy’s both use human-grade ingredients. I believe it’s the fact that the vegetables are in larger pieces and (at least with THK) raw that causes the poor digestibility. Dogs don’t produce cellulase so they are unable to breakdown the cellulose in plant-based ingredients unless they are cooked and processed. With my dogs’ raw diet I cook and puree all their vegetables.
