My vet prescribed FortiFlora Nutritional Supplement for Cindy's colitis, since she won't eat pumpkin or yogurt. Does anyone know how well it works, and what is the best way to get her to take it. The vet said mix it with her food, but she usually only licks at her food and leaves 3/4 of it behind. Also, does anyone know where I can get it cheaper than $25 for 30 packets?