My initial pullets are right about 6 months old now. I have never given them a de-wormer but have read here on many different posts that you should worm every 6 months and Fall and Spring are the best time to do so. I have no reason to believe my girls have worms but if it is the right preventative thing to do, then I will. I've also done research on natural preventions such as pumpkin seeds, which I would prefer to do. I am confused though why Wazine is so highly touted here in several posts since the label says not to give it to "laying hens." Could anyone clear that up for me?