I don't know how many of you are into homeopathic remedies but one I have found that is excellent is oregano oil mixed in olive oil. Its a very harsh and caustic oil so it HAS to be diluted but it will worm them and it appears to kill cocci almost instantly as well. Been great for treating my pea babies because sometimes they don't look sick one minute and the next are at deaths door. About tablespoon of oil and 4 drops of oregano oil mixed in a cup and then droppered into the edge of their beaks so it doesn't go down wrong pipe. That much should treat 4 or 5 birds. Oregano oil is pricey tho at health food stores. Online is much cheaper but those are only places you can get it. Its saved quite a few of my birds now, had my flock rooster go down last week, found him in coop laying on side with head laying on ground. I didn't think I could save him but brought him in house and dosed him, within 2 hours he expelled a huge roundworm and up and runnin about!