I assume that Pedwardine means Stockholm Tar spray - if so, then it's not always available in a spray in all shops. But they will have it in it's more normal form - in a pot. It's sticky stuff and smells (kinda nice I think, but other ppl say it stinks
) and is black, so if you goop that on you won't necessarily be able to see the skin underneath.
If you can only get it in the pot form then perhaps i wouldn't apply that until you know that the infection has healed, just so you can keep an eye on it.
I use it on everything
- shearing cuts, minor wounds, horn growth, etc. It is a natural antiseptic and keeps the flies off.