This thread was very helpful. I just went on vacation a couple days after a hen of mine started feeling "droopy". In an attempt to make things easier on my house-sitter I went ahead and bought some TH, and instructed her how to use it. I didn't want to make things hard on her by trying to just dose the one chicken so I had her just give it to everyone. As soon as I got home on Monday, I stopped group medicating and just isolated Daisy and dosed her by herself for the rest of the week. I'm thinking this coming Monday I will start keeping the rest of the flock's eggs again. Thanks!
