Hi! I am still fairly new to raising chickens. I got my first 3 girls in March 2017 and have 4 young pullets now. It occurred to me that I should de-worm my adult chickens since they do periodically free range and eat grubs and earthworms. I haven't seen any worms (yet), but want to be proactive. I've hard that Cayenne Pepper is a good prevention. I add this to their corn or oatmeal in the morning. However, I was checking out worm prevention products like AristoPet Wormenda Poultry Wormer, MavLab Avitrol Bird Wormer Syrup or Tablets, Skyes Big Pig & Poultry Wormer, or Wetsense Kilverm Pig & Poultry Wormer. Have any of you tried any/all of these products? I'd love some feedback. Thank you!!