Bacteria , both good and bad, is present in every corner of the air, soil, water, bird of the air, and beast of the earth and even inside and outside of you and me on this planet. The immune system evolved in animals to fight off the bad pathogen bacteria or all life as we know it would not exist. The claim that any pathogenic bacteria doesn't exist in pastured poultry is simply sophomoristic. The chicken eats a bug or a speck of feces from a wild bird, mammal or slug, etc. that is a vector or contaminated feces washed down the hill in water and deposited on a blade of grass and bingo you have one contaminated chicken. A chicken has been known to take a dust bath or just plain walks across some grass or dirt and if the dirt is contaminated with a pathogen and happens to scratch itself with that leg, then preans it's feathers again bingo there is one contaminated chicken. Even One slip of a knife at any point it time when eviserating just might be the next time one does the deed and contamination occurs. It could be just a nick of the gut or while pulling out the intestines with one's hand and a slight tear occurs and one may not even see any feces, or even while pushing one's hand into the chicken's cavity and a small amount of feces comes out of it's rectum and onto one's hand a pathogen escapes onto the carcass. Nicking with the knife or tearing the crop while trying to remove it, and again bingo, one contaminated bird. If one hasn't had a case of illness consider that just plain luck. If one doesn't use a disinfectant while processing poultry, or any animal for that matter, and sells to the public, One would be well advised to carry a HUGE liabilty, errors, and ommissions insurance policy and be prepared to do some sereous jail time..