Out of all of the high end, grain-free kibbles we tried, the only one that solidified their stool was Wellness CORE chicken. If your dog has allergies to poultry, then this might not help. But we blend the CORE (chicken, because they didn't really like the Ocean [fish] flavor), Orijen Red Meat Formula, and now Acana Grasslands together. In the past we blended Innova EVO (pre-Proctor & Gamble takeover), TOTW, Solid Gold, Life's Abundance, and others. But the CORE has always given the best stool results. Good luck!