How to kill toenail fungus is a problem that some 35 million Americas deal with on a regular basis, so you can imagine how large that number is on a global scale. It's a longstanding problem that doesn't seem to go away. It is especially troublesome during the summer months when people spend a lot more time outdoors and at the beach, and is particularly stressful for women who are horrified at the thought of not being able to wear sandals due to fungus infected toes.