Many years ago I was wearing false nails. I got a fungus under 2 nails. The doctor said to take them off and never wear them that I'd never get rid of the fungus. I bought some liquid athlete's foot stuff and put it under and on the nail. Within 1 month, the fungus was gone. If I ever get a fungus again, I'll try your method. I'd heard mouthwash helps many things. Could be because it has alcohol????