this is how you treat it

Put apple cider vinegar into large zip lock bag half full, put your feet into them, put your feet into shoes with the zip lock bags, seal the bags on the top with elastic bands.  You can move and do whatever you want to do.  Leave the feet in the bags for 30 to 60 minutes, depending on how your skin tolerates it.  I did twice a day for a month.  My fungus nail is gone.