You can get pinetar at tack and feed stores or farrier supply stores. I started using pine tar on foundered horses tha had bed sores for a long time before I worked on them. It would heal a bed sore up while the horse was still laying on it. I've also used it on dogs with hot spots, my kids, and even Alfred Habermann. It takes pain away in seconds, helps stop bleeding, keeps as much tissue alive as possible, and prevents infection. My grandfather and dad used it on the farm when they would castrate pigs.
Do not drink, eat, or smoke it! It says right on the can: Harmful or fatal if swallowed. But I can't imagine anyone ever trying to swallow it.