I've a bit of a problem with athlete's foot, and the only way I've found to deal with it is completely natural materials.

I've taken to wearing these socks under pure leather shoes.  The wife laughs that I should wear such heavy woolen socks in summertime in Georgia, but let me tell you:  The combination of wicking by the socks, and natural absorption by the leather shoes has my feet and toes the happiest they've been in years.  Beyond that, walking the quarter mile from where I park my car to the front door of the plant has become a sort of fun exercise in realizing just how well a good pair of socks can make your feet feel.

These are the socks for me.  I'll be buying loads more of them.