Rain Rot, Mud Fever, Scratches....whatever you want to call it

OK imagine this on all four of India's pasterns, the reason for this??
the ridiculous amount of mud in all the pastures (except the lesson horse's that boarders aren't allowed to use....typical) all of the horses are getting it. As soon as one clears up another gets it

and i think i will permanently smell like Budeaux's butt paste.(did i spell that right??)
After i cleaned her pasterns with antibiotic soap, i put the butt paste on to keep it clean. hopefully it will work

PS: i HATE rain rot!!!!