Carly has a cut ( picture attached ) that is right on her heel, so whenever she walks it's bending there and making it difficult to heal. I applied gel on her cut and wrapped it for a few days. Then I removed the wrap to check on it and air it out. As you can see, it got dirty while being unwrapped. How should I clean it? With hydrogen peroxide? Also, should I spray herbal spray on it and lock her in her stall for a week or so, or shall I just wrap it and let her walk about in the pasture? This is Carly's first "major" injury, and, of course, it happens when I'm about to take her to horse camp ( little less than a month away ).