I don't know if it's the "right" product to use, but I used iodine on my little mare when I first brought her home for her smelly feet. I was out of my usual thrush/white line product and we had iodine around from calving, so figured it couldn't hurt. It did seem to help some. I didn't have a sprayer for the iodine, so used an empty syringe with no needle to "inject" it around her frogs.