Hi - I have 14 chickens - 11 of them are hens. A few of them seem to have Corzya - one hen has bubbly eyes and the discharge smells badly - i treated her with tetracycline for a week and she was better for a week - now she's back with the same thing again, a few of the others have just a nasal discharge, one rooster had a puffy eye, but i treated that with vetercyn and that helped - he's better now, another rooster seems congested, but can't crow properly. I don't want to cull, we love our chickens dearly, and we don't want to lose any. I've been giving vitamins and electrolytes with probiotics in their water (started that yesterday), the one with the bubbly eyes is separated and getting the tetracycline again. I've also been using ACV and garlic. I am wondering if there is anything else I can try to do to help them. As I said, I cannot kill them - my kids love them dearly. I'll have a closed flock, no problem at all. We have them as pets and for eggs for our family to eat. I cannot find Vetrx at tractor supply, nor any other antibiotic ANYWHERE. I can order it online, but am afraid it will take too long to get here... does anyone else have any tips? thanks so much!!!