I feel like I've been posting this a lot lately, but I use hydrotherapy for just about all external injuries. I hold the wounded area under warm running tap water for several minutes and do this at least twice a day for however long it takes to heal. In between these treatments the wound can be covered with antibiotic ointment, bandages, etc. The first time I used hydrotherapy was when my Cocker Spaniel had her back ripped open lengthwise by another dog. The stitches fell out and the entire wound dehisced, so I put her in the bathtub under the running faucet several times a day for about two weeks. Her recovery was amazing! Then, about 5 years ago my filly tore her chest open on the neighbor's barbed wire fence when someone spooked her with a fire cracker. We were out of town and didn't find her till the next day; by that time the vet said it was too late to suture the wounds, so I sprayed them with water from the garden hose several times a day. She healed great too, and the scars aren't even visible now. Since then I've used the technique on chickens, ducks, kids, cats and goats, always with positive results. As a nurse I've also used modified versions of it on home-bound patients with serious decubitus/pressure ulcers (bed sores). What the combination of warm water and pressure does is mechanically debride the wound of necrotic tissue and debris while promoting healthy, fresh tissue to regrow. You should see the wound begin to fill in with granulation tissue and the diameter of it gradually become smaller. The goal is for it to heal from the inside out.