Keep on washing the wound with hydrogen peroxide and continue until the crusts do not become white. The “white” is the dead corpses of tinea corporis, clostridia, etc.
By washing the wound with hydrogen peroxide, the bacteria and fungi will be killed. The crust will harden until the wound closes and is healed. Then, continue to wash the crust with hydrogen peroxide after the wound closes. This will soften the crust, help the skin under the crust to heal, and the crust will eventually dry out and fall off.