How do you use vinegar to treat a toenail infection?

When using vinegar to treat a toenail infection, mix equal parts apple cider vinegar and water, and soak the feet for 30 minutes daily, explains Top 10 Home Remedies. The process may be repeated up to four times daily, advises Home Remedies For Life, drying the feet completely each time.

As fungus cannot survive in acidic environments, the inherent natural acids of white vinegar work to fight the fungus causing infection, states Earth Clinic. Prior to soaking the feet, thicker nails should be filed gently to enable the vinegar to penetrate the nails more effectively. Depending on the severity of the infection, it could take anywhere from three to six months to cure the condition.