Doterra essential oils are a natural and non-toxic treatment option for athlete's foot, caused by fungal infections. The antimicrobial properties in doterra essential oils can help eliminate fungi and bacteria that cause the infection. Tea tree oil, peppermint oil, and other compounds exhibit strong antimicrobial activity against fungi and bacteria. To use doterra essential oils effectively, dilute them with a carrier oil and apply directly to the affected area. Despite its potential benefits, caution should be exercised when using any new remedy.