I've heard that if you would fill a small tub with really warm water,and add corn starch, swish it up and soak for 10 minutes every other day for 1 week, it will cure the fungus.
You could try using Listerine Mouthwash as a soak. I read somewhere that this was effective. For athletes foot just go to the drug store and get something over the counter. keep your feet clean and dry. good luck.
One more is vinegar
Soaking your toes in a 1:2 vinegar and water solution, every other day for 15minutes. Takes 2 months.