My horse has constant thrush in the winter, and I've tried kopertox and that purple stuff (one use only, right!) daily for weeks on end. In the summer, after I pick her feet, I hose out her hooves and then squirt in betadine, and then rinse it out. The feet stay good and healthy. But now again, with the cold and mud, she's getting thrushy. Can anyone suggest what to do in the winter or during the time of year when it's more damp? I'm not sure leaving betadine in the hoof would be good for the health of the frog. Or maybe not? Do you think hoof packing would help or hurt?