Our 5 y/o field spaniel has had problems with loose stool on and off for the two years he's been with us. He's been through blood work, xray to rule out foreign bodies, homeopathic meds, among other things. He also has allergies, receives allergy shots, and is fed Wellness fish and sweet potatoes. We've been adding pumpkin out of the can and white rice to his feed but the problem persists. I've learned about the use of FortiFlora and read on this website about adding to his dry feed yogurt with live acidophilus culture. What would be the best course of action now? If we go with FortiFlora or yogurt should I end the use of the pumpkin and rice?