Does anyone have any advice for me ? My pony has had mud fever for some months and it just wont clear up. I have been using pig oil and sulphur for 3 to 4 weeks and I apply it every day. It formed a thick black scab which initially flaked off to leave good skin underneath, but now it wont budge and the mud fever is spreading up her leg. In addition to this her leg has started to swell. Am I applying too much pig oil and sulphur and too often.She needs to be turned out and although her paddock is not muddy, this weather isn't helping.Please help!