My Leo has what appears to be a small abcess behind his ear. I had seen him scratching at it and it hadn't looked bad until I checked it a few minutes ago. I will not be able to get him to the vet until Thursday. This is a very small town and there is not one that will be open until then. He doesn't really seem to be in any pain and doesn't mind letting me look at it. It appears to have begun draining a little, but I think maybe he irritated it by scratching. I would like to clean it, but I don't know what would be safe to clean it with. Any suggestions would be greatly appreciated. Thanks.