I am curious as to who uses natural wormers vs chemical pesticides. I would love to go the natural route. I haven't seen any evidence of worms and used ivomec last fall as a maintenance med for parasites. All my chickens free range so I'm sure they have something crawling around in there. I would like to know who uses what and if you use them for maintenance or to treat an outbreak and how effective they are. All input is greatly appreciated.