DESC: Horses suffer everyday stresses for many reasons, deworming, travel, antibiotics, diet changes, weather changes, competing, etc. These can lead to digestive disorders. Probios treats are a great way to reward your "Best Friend" while keeping their health and wellness in mind. Probios Apple Flavor Digestion Support Horse Treats have the Goodness of Yogurt! *Plus a $2.00 Mail in Rebate inside each bag! Limit One Per Household.