Thrush Crush is a 100% natural topical treatment for destroying unhealthy conditions of the hoof and creating a healthy environment for hoof tissue. The active ingredient, bee propolis, is a substance created by honeybees, rich in bioflavinoids, which honeybees produce to protect their hives from harmful fungal and bacterial infections. The same way that propolis is effective in the beehive, Thrush Crush works to kill thrush and other harmful conditions of the hoof. Our product is very concentrated, and a small amount does a tremendous amount of good. Thrush Crush is far superior to the many commonly used chemical products on the market today. We know you'll be satisfied with the impressive results of Thrush Crush or your money back.