I feel so bad for these guys...er, girls/guy.
Every one of them is getting picked at like crazy. The girls all have bald backs toward the butt, and the rooster has a bald butt, and evidence of picking at his neck. They have plenty of room, plus and outdoor run, get treats, etc. I've treated them all with the blue spray stuff and it isn't working!
Thoughts?
First of all, if you mean BluKote, that is not designed as an anti-pick solution. I'm not entirely sure why folks are recommending it for that, if that is the one you're talking about. It's an antiseptic spray for wounds.
Bald backs toward the bum can be entirely due to the rooster himself, or the rooster plus molting. Also, bare bums are mostly due to molting around here. Never, ever had mites or lice here, but we've sure had some mooning chickens, LOL. And the bum fluff can take ages to grow back at the end of a molt, too.