We started using Bio Moss and Yea Sacc after our mare started showing signs of ulcers. The signs we noticed were increase in anxiety especially in the show pen, weight loss, and resistance. After a short time on this product much of the concerns went away, and we have much happier and healthier horses due to using Bio Moss and Yea Sacc. We now feed our entire barn these products, and will be forever Oak Creek Services Customers. Not only do they have the best products, but their customer service is first class.