Hay hotel person'
Try placing cotten pads soaked in malt vinegar to burn the fungi out on the Infected area's for half an Hr each night for a week & keep ya eye on the results.
I found this method from mother most affective' The only draw back is that it does tend to sting a bit when doing it but it sure burns that fungi out.
Give that a try & let me know how ya get on' On this Forum ' Les