It's my area. Chickens aren't seen as important, not as animals to spend money on. Most owners don't treat for parasites, external nor internal, at all, ever. Chicken coops MAY get cleaned out once a year. Old age for a chicken is 3 years, if they don't die before 4 it's a miracle. They really are a throw away animal in my area. I'm seen as crazy for doing what I do, especially for mixing BOSS, meaties, & scratch for them! But I check them weekly, sometimes multiple times a week, for external parasites. Not saying that there isn't SOMETHING hiding in their stall that I never see on them .... if there is it will survive an atomic bomb .... I've had my vet for years, & they do more for me without having to come out & see one of my animals when other vets will charge $100 call fee alone. But long before I started using them they were strictly working on large farm animals, mostly cows since this was a heavy dairy farming area in it's day. The vets that started out on, or only work on, small animals will probably give me advice, but only if I bring the chicken in & get a fecal test done. No offense, but I didn't take the one chicken in that had a broken leg. I'm not going to spend $75 just to get an opinion. Hopefully the Rooster Booster has done SOMETHING for some worms, though I know it CLAIMS it'll only take care of a few. I'll hit them with the safeguard at the proper amount today. Luckily the oldest ones are only 1 yr & 5 months, so they haven't gone TOO long with being underdosed, & I've NEVER seen any signs of worms, from them nor in their poop.