Using diluted bleach to treat athlete's foot is not a recommended method because bleach is a strong chemical that may cause irritation and damage to the skin. Usually, the first choice for treating athlete's foot is to use antifungal medications, such as topical creams or sprays, which are usually available in pharmacies and are generally safe and effective. If you still want to use diluted bleach, please be extremely careful and follow the steps below to minimize the risk of skin irritation: 1. **Proportion**: It is usually recommended to use a very low concentration of bleach solution. You can try mixing bleach with water in a ratio of 1:100. This means using 1 part bleach and 99 parts water. 2. **Test skin reaction**: Before use, you can test it on a small area of less sensitive skin to observe whether there is an allergic or irritation reaction. 3. **Directions**: Apply the diluted bleach solution to the area with athlete's foot, leave it on for a few minutes, and then rinse thoroughly. Avoid contact with healthy skin. 4. **Be safe**: If burning, pain or other discomfort occurs, rinse immediately with plenty of water and discontinue use. 5. **Consult a doctor**: Before trying any home remedies, especially those involving chemicals, you should consult a doctor or medical professional. Ultimately, I recommend looking for safer and clinically proven methods to treat athlete's foot to ensure health and safety.