Our rabbit has sore hocks, which is basically pressure sores on the bottom of his feet, which sounds like what you've got. We did the chlorhexidine treats like bpatters mentioned but we did it as a compress, which was much easier. You mix the solution with the water then soak a towel or piece of fleece in it. Wring it out well and them, in the case of our rabbit, we put it in the bottom of the carrier and had him in it for 15 minutes. It was way easier than trying to get him to soak and not drink it. Would that work here @bpatters, or is there a reason that that wouldn't work for piggie feet?