I'm pretty positive that 2 new chickens that my friend got (yes I know one shouldn't introduce 2 adult chicken strangers to a flock, but what's done is done) have coccidia, judging from the blood in their poo (I'm farmsitting for my friend). They are separated now and I'd like to put them on Sulmet or Corid but I've called and visited all the local feed stores, agways, etc. and they don't sell Sulmet or Corid (only Terramyacin). I believe I could get some if I take the chickens to a vet but they're not my chickens and I don't have that money to spend on them. Where do people get Sulmet and/or Corid from? Also, should ivomec injections be done when a chick is young? Or is that not true in a backyard, free-ranging flock? How important is ivomec for them? Thanks for any help.