Does anyone have any recommended treatments for mud fever? one of my horses has had it for almost a month, and won't let you pick-up her leg. if you're lucky she'll let you hold it long enough to clean her hoof but then start prancing, which has never been a problem and is still good with her other feet. So far I have been using zink ointment and tee tree oil, and every now and then betadine scrub. but still not seeing much improvement.