Most drug stores or walmart should have betadine or hibiclens. Veterycin can be found most places that sell pet supplies, it's good for all species, look in the dog and cat stuff. Triple antibiotic ointment or neosporin (without pain killer) you should also be able to find in the first aid dept of any of those places. If you have any kind of feed store they may carry the penicillin, it's pretty commonly used for livestock. If not, then I would mail order amoxicillin as a fish antibiotic (Fish Mox) and get it there as quickly as you can. You can make sterile saline solution at home to use for flushing if you can't get anything else. 2 cups of water and a teaspoon of salt, boil for 15 minutes with the lid on. Let it cool to room temp and then put in a sterile bottle or jar.