Ok, we just started keeping chickens last July so we are definitely new to the pest situation. We have figured out at least one hen has a lice problem. I know that if one does they all do. My question is about our pullets. We have 6 almost 3 month old pullets. They do not house with the hens but their mini-coop is outside the the regular coop about 4 feet off the ground. They don't interact with the older chickens. However when I get home from work we let the adults free range and put the chicks in their run for a while- which is attached to the adult coop. Does this mean even if we see no sign of lice on the chicks or bugs for that matter that they have them too? Should we treat them as well? Thanks for any info or advice!