I know that there are some people online that say that, but I know that those things work. I've had chickens and goats dying from worms and I healed them through herbs and the other things that I mentioned. I've had tons of chickens and goats for a long time and have never had one death from worms and I've never used any medicine! some more herbs that work for deworming are Cayenne pepper fruit, Clove bud, Fennel seed, Garlic Bulb, Ginger Root, Hyssop leaf, Mullein leaf, Thyme leaf, Wormwood leaf/herb to make it simpler for people to deworm their animals they can just buy this herb mix:
https://www.firmeadowllc.com/store/p818/DWA_(tm)__-_16_oz__supports_body_in_foreign_matter_removal.html