What can you use to get old chicken dried blood off a chicken butt? I had 10 chickens Now down to 6 feer I might loose another one. Checked ALL chickens and found one with almost a bare backside with dried blood on it. Brought it inside and washed the bottom with dawn and warm water. It didn't come off. All or most of it's feathers on it's behind were gone. I fear it will be dead in 2 days because of being picked on. Reason I looked today was their was some blood on an outside shell of one egg. So I either have one bully or more. But I'm losing chickens. What can I use to clean and coat a chiclkens butt to save the chicken? HELP!