OK, I am a failure at science. I did not check to see if my chickens have worms before I fed them pepper flakes. I will not check after either, since my vet is clueless. I tried feeding red pepper flakes to the flock. I did not see any obvious evidence of worms in the bright red poo. I also fed them chopped jalapeños with similar (black poo) result. They love the peppers! What are your experiences? Does anybody have proof that it works?