Ringworm is caused by the same "virus" that causes athletes feet.  What I
have done in the past is put tinactin on the site, about 2-3 times a day
to clear it up.  Make sure you include the "skin" about 1/4 - 1/2 inch
outside the circle.  Also, now this was on a dog, the vet had a dip that
we used.  3X a week.  Don't remember what it was.
 
Cindy
[Posted in FML issue 3294]