Colloidal silver will speed the healing process while keeping the wound disinfected. The dressing needs to stay wet for the best and fastest results. If it was my horse, I would take a wad of gauze large enough to cover the wound and soak it with colloidal silver, then I would wrap it with one of those beige elastic wraps that are used to wrap wrists ankles or joints that has velcro at the end to fasten it. I would change the dressing once or twice a day depending on how it holds up. It is important for the gauze to remain wet with CS as it is most effective that way.