Hello! I'm totally new to this whole "chicken raising thing". I have two 17 week old chickens- One Buff Orpington cockerel, and one Buff Brahma pullet. To all of you who are cringing, and feeling bad for my pullet, I'm about to get three more pullets from a local farm I see posts about worming and such everywhere, and I had a few questions. Do I have to worm my chickens? Is it a good idea? Even if I see no signs of infestation? What should I use? Where can I get it? When should I start worming them, and how often? Thank you all in advance!