I was in the process of selling off my older flock today, and was in the coop catching the girls, when i turned around the man buying them had walked into the coop with his nasty carrier from his truck and layed it down in the middle of the coop. I was flabbergasted. I didn't ask for his help but I guess he was wanting to help catch them. From a biosecurity stand point I know he has chickens at home and I don't quite know what to do. I was making room in the coop for the new breeds I am purchasing. Is there anything preventive that I should do for the hens and chicks exposed? I don't want to risk losing these new birds.