I saw something at the feed store the other day called Pig Swigg and it claims to be a wormer for chickens and pigs. Can I still eat the eggs of my layers while they are being treated? If not how long should I wait? I don't have any signs of worms, but I have about 75 layers and have had chickens for 4 years and have never wormed anyone. I had an older hen die today and it got me thinking I should probably worm them just to be sure. Does anyone have any experience with this stuff? Does it work well?