I have read a million different opinions about wormimg chickens, and I am stumped about what I should do. This is my first flock, and they're almost 16 weeks old. They don't free range for now because I don't have a fence yet and I don't want the neighborhood dogs to eat them, so they just have a nice big run. Anyway, what is your opinion on worming? When should I start to worm them? How often should it be done, and with what products? Thanks in advance for the answers.