Pet Alive RuniPoo Relief is a 100% safe and natural remedy containing herbal and homeopathic ingredients which are carefully selected to maintain digestive balance, firm stools, and healthy bowel functioning just when your pet needs it most. RuniPoo Relief is safe for all pets and promotes optimal bowel functioning in your pet; encourages healthy stool formation; soothes nervous stomachs and promotes the health of the digestive tract. Diarrhea in pets can be related to something they have eaten, a viral infection, bacterial infection, worms, a foreign object they have swallowed and even diseases affecting other organs such as the liver or kidneys.