I've just bought three tubs of Fungatrol cream ( I think it used to be called Fungasol).
I've found this useful once the mud fever has taken hold to soften the scabs so that they come off painlessly a day or two later, with repeat applications as necessary. About £15 a tub (or £6 for a very small tub) though so there may be cheaper methods. Once it's cleared up a bit I'll revert back to nappy cream (zinc and castor oil).
I tried every cream I could buy and some from vets .They always got dirty , some worked a bit but nothing got rid of it and my horse has to go out during the day.I was at my wits end,I had tried hosing each night , leaving to dry and brushing off but with cream it was always messy.
I saw an item from Lincoln university and they are doing a study and send you cream and powder for £5 and you email them photos, but they wanted you to stable the horse and before I went on that I bought some sportabac turnout boots and kerritex powder .I was worried because it said They prevent it not cure it and you should get it healed first but I had a go.
His legs are now amazing pure white and scab free [ first time in 2 years] I dust power on his legs and inside the boots and pop them on and out he goes ,at night he comes in and I take the boots home and wash them and dry them on the radiator.I would like thermatex wraps for the stable as well but it has not been necessary
Two of the horses on the yard where I keep my boy had mud fever last year (including mine (though on a different yard)) but this year we decided (in the wettest winter in 12 years on that land, go figure) that we would leave the legs alone, noe washing, no treatments or preventative measures just brushing them off when they had dried from standing in the yard for 1hr or 2 so they had dried naturally and touch wood we haven't had any mud fever at all this winter. I think that unless the horse is going lame just let the legs be and don't clip them or anything, they look unsightly for a time but are fine health wise. Hope this helps.
I'm with you littletinker!! Udder cream is the best thing for mudfever, and softens scabs off really quickly - much quicker than most other creams and oiuntments. It is also a great barrier for moisture and keeps the skin really soft and supple and healthy.