Hi,
Yes, thanks. I've read those threads and a ton of others in doing research on the situation. It kind of irks me when people post questions that are readily answered with ten minutes of research and a simple Google search. Anyway, I hadn't been able to find more information to using Blu-Cote as an antifungal treatment. So, I tried it.
I gave the afflicted hens epsom salt baths, trimmed their butt feathers down, and sprayed their rear ends with the Blu-Cote. I'd already added ACV to the water a few weeks before, but that didn't seem to help. I added the powdered probiotic to their feed last week too. The Blu-Cote seemed to work like a charm. I was surprised at how quickly it worked in fact. The butts seem clear and the chickens are all laying again happily. Yay. A success! (for now at least)