We have six chickens, three different breeds who are about 18 months old. All are in very good health, eat a high quality feed, and free range on our property 4 - 6 hours per day. I use DE in the coop and in their dust bath and ACV (with mother) in their water which I change every other day. Their stools all look normal. I have not yet wormed them and wondering if I should? I've read through numerous posts and am seeing varying opinions. Some say do so as a preventative measure; others not. Though it can be quite wet here in upstate NY, this year has been particularly dry. With winter approaching, if I do use a wormer, I'd like to start now. Any thoughts on this?