I havent wormed my chickens yet, they are all about 8mo old. Its really cold here and they are inside most of the time. They dont like the 3 ft of snow on the ground!! When should I worm and what is the best wormer to get. I havent seen any parasites on them, maybe i will take the magnifier out and take close look. I havent dusted them with anything either do i need to do that? Here in northern utah we dont have fleas at all does that mean the girls wont get bugs like mites?? Sorry Im new to this, I actually looked in my 3 chicken raising books but couldnt figure it out.