I have two groups of birds that are six and seven months old and two 16 week old pullets. I have never wormed, and wanted to know how I should do it before I move them all to the new coop and run from their summer tractors. I habe been reading and am unsute if I should just do wazine or it and then Ivemectrin, or something else. Btw I am just finishing Corid with the one group that I brought the two youngest birds into from a npip farm as they got bad poops a week after the move. Thanks in advance from a newbie.