Good morning. I have treated a flock of 3 for lice before with seven dust and it worked great. I now have a flock of 50+ and found some what I belive to be lice on some of them a few days ago. I would use the seven dust again since it worked so good the first time but some of the hens in my flock now are so timmed that I can't catch them to treat them. Even if I try to do it at night they just fly around and beat themselfs up against the coop. Is there anything that I can buy to put in their water or feed? Or does anyone on here know of another way that I can get rid of these little pest? Want to do it a.s.a.p. before they get really bad. My chickens and I thank you for any help! God bless!