Using diluted bleach to treat athlete's foot is not a recommended method because bleach may irritate the skin and even cause chemical burns. Athlete's foot (tinea pedis) is usually caused by a fungal infection and is treated with a specialized antifungal medication. If you still want to know how to dilute bleach, here are some common ratios: 1. **Dilution ratio**: Typically, the concentration of bleach for household use is between 5% and 10%. If you want to dilute it, you can mix one part bleach with 10 parts water. 2. **Precautions**: - Always perform a skin allergy test before use. - Avoid mixing with other cleaning agents. - Make sure to use a well-ventilated environment when handling. - Try to avoid direct contact with skin when using, and wear gloves if necessary. However, again, it is best to consult a doctor or pharmacist for professional treatment options to deal with athlete's foot.