Yea, like someone else said, TNChick721, you can find Blu-kote just about anywhere that carries horse, or poultry supplies. If you can't find it in any particular store, ask an employee, and they may have it out back, or even a generic brand of the same thing.
Good luck!
Also, there is a anti-bacterial spray called Blu-Kote. It is blue, so that the other chickens won't see any blood or red spots! I have used it plenty and never had a problem with it!