I would like to know the answer to this question, also. I would also like to know exactly how the oral medication works. I understand the cleaning of the environment - it removes the spores so that it helps to prevent additional infections. But, what exactly do the topical treatments do (kill the spores?) and what does the oral medication do?
Oh and here's a chemistry question for anyone: how exactly does miconazole treat ringworm? Does it kill spores? Does it inhibit its breeding capacity? Same question about the lime sulfur.