My boyfriend has had a bad crack between his pinky toe for years, it looks nasty and infected, what should I be using on it, he said it got cut many years ago. and it healed then reopened,Dr. had him using antifungl cream on it but it is not a fungus, and it is deep now with pus , loos very bad .... i think i should was it with badadine and then dry it good and pack it with gauze ....?????