I use warm salty water.Depending on the wound,I wash it or flush it with warm salty water.I pat it dry and then apply sudo creme. Ive tested sudocreme on birds,lizzards,snakes, horses,rodents and dogs over the years. I think its brilliant. Wash 3 times a day and apply sudocreme 3 times a day for 3 days. If the dog can reach the wound I let the dog do a bit of looking after the wound.I will keep an eye on it.If I need to wash and apply cream I do. I like the wound to start to dry out as soon as it can.