The FOX laser will be used in accordance with manufacturer recommendations, with output power, spot size, and proprietary pulse train incorporated into the treatment regimen. Treatment will take place by traversing the infected hallux in a side to side fashion, with care being taken to cover the entire surface of each nail, by slightly overlapping the previous path. In areas where the nail appears to be infected, a second series of passes perpendicular to the first set will be performed, again slightly overlapping the previous path, as described above. Even if other toes in addition to the hallux appear to be infected, only one hallux per participant will be treated and analyzed for the purposes of the study. The treatment will be performed as an outpatient procedure at St. Paul's Hospital or Mount St. Joseph's Hospital.