Can listerine to cure fingernail fungus?

Not really: It will disinfect the digit and soften the nail so that the fungus doesn't have anything to attach and grow on, but once you stop, there's a chance that it will come right back again. It's a short term clearing, not really treating the fungus infection.

Several treatments.: The reason you hear so many different treatments for nail fungus is because there is no perfect, sure-fire treatment that works 100% of the time. I've seen listerine and vaporub work, as well as other natural oil remedies, but very rarely. You can also try laser therapy, antifungal creams, paints, or even oral medications if your doctor deems you healthy enough to take them.