Never use any lidocaine. Now that being said.... Has Phinney gotten into any acidic matter? Is it a fungus? vs. bacterial? Sometimes vaselines and antibacterial ointments only give fungi a nice place to grow. Tree tea oil is good for bacterial disinfectant and anti fungal. If it is fungal...treatment will have to go on for about 2 weeks. Don't use any more peroxide as it will kill tissue and only give the problem more fodder to grow on.