Bleach is an effective treatment for toenail fungus, according to HealthGuidance.org. The proper way to eliminate toenail fungus is to soak the feet for 30 minutes every day in a solution of 1 tablespoon bleach to 1 gallon of water until the fungus disappears.
Users of this method may need to do it every day for days or weeks before it has an effect, warns HealthGuidance.org. It is also important to cut the toenails down prior to soaking, making it easier for the bleach to reach the fungus.
Although some sources may advise a stronger ratio of bleach to water, HealthGuidance.org advises against it, as bleach is corrosive, and a stronger ratio of bleach to water may damage exposed skin.