I've had my Thoroughbred gelding for about 7 months now and ever since I got him he's had a fungus on his hind legs. The fungus is mostly on his cannons and hocks, but he has a tiny bit on one of his ears. The fungus is definitely not scratches or rain rot, and the fungus is not at all on any of his white socks. It looks like dirt but when I try to brush it off it turns white. The fungus doesn't appear to be bothering him but I don't want it to get worse and possibly start bugging him.
I've been using Krudbuster on the fungus for a couple months now, soaking for over 5 minutes, rinsing it off and then making sure to completely dry his legs and ear off. It doesn't appear to really be getting any better.
Does anyone have any idea what fungus he has? Is there anything else I can do to get rid of it? I've heard of MTG shampoo but I'm not sure if this is exactly what he needs for this particular fungus. I'd like to try to get rid of it as soon as possible, and hopefully there are treatments that I can use even during the winter (I live in WI). I'm new to horses and I definitely don't want my horse to look like he's being neglected :(. Any advice would be greatly appreciated. Thanks! :)