This problem have been going on for a while, before I wouldn't have this problem, but now I am getting frustrated. This things start in the eye or on the beak very small then they get huge get infected some pullet recover some get seriously infected to were the eye gets puss. I am gona have to cull a 6 week old chick because it looks nasty since I believe there going to be carriers I dont want to expose my adult flock. I want a happy healthy flock not a sick flock. How would I treat and prevent this?