I was wondering does anyone treat their chickens for worms or parasites just to keep it under control? I haven't done anything with my hens which are 10 months old. I was just wondering if you are supposed to add something to their water or treat them???? Any suggestions will help. I haven't noticed any worms or problems, my hens are free range right now, fixing to be cooped up when I get my garden planted in the next couple of weeks. Don't want them to eat my garden up.