Think about where chickens eat, and where they poop. They need worming more often than dogs and casts. Don't forget that those juicy worms carry parasites too ! Worm your birds, not with pumpkin seeds, garlic , or diamateous earth. Use the good stuff , and raise a nice bird. There are no shortcuts....after 55 + years raising winning birds, I would have found them.wow that is a really good idea doing it that often..I mean they do it that way for dogs so why not chickens too!