A. For dirty shoes, first clean them with a brush dipped in water. For non leather shoes (such as nylon surfaces), just use a sponge dipped in warm water to clean them. If it is greasy dirt or very dirty strong dirt, use a leather cleaner and nylon brush to clean the surface and the lining of the shoes, and then use a damp cloth to wipe and clean it to prevent the salt of sweat from quickly entering the pores of the leather through the lining, damaging the leather tissue, drying it and causing cracks. B. Clean and dry the frosted leather shoes, brush off the floating soil, and use a water repellent for treatment. It is recommended that you do not use shoe wax or shoe polish, as they will weaken the breathability of your shoes. C. Clean non leather shoes with cold water and naturally dry. After drying, use a water repellent for treatment. Remind everyone not to use shoe wax or polish, as they can weaken the breathability of the shoes.