Well this had happened to one of my dogs. The vet reccomend first just cleaning out the area with some water and a tiny bit of soap. Then take some hydrogen peroxide and flush apply it to the wound. Hydrogen peroxide is good because it is a great first aid antiseptic. Then wrap it with gause and wrap some medical tape over the gause. The medical tape would help to keep the gause from falling off, or being scratched/bitten off. We were instructed to do this everyday until it was evident that the wound was much much better. I really hope this helps you!