Well, when we took our birds to the fair, one of them was found to have lice. They tell me it's usually around their vent, and belly -- but this guy had it in his muff (He's a bantum D'ucle). It looks like clumps of salt that are stuck at the base of his feather shafts, kinda hard to see. One of the guys over the chicken building at the fair sprayed him with something (don't know what, I couldn't see the label well) all over his belly and vent -- I pointed out that wasn't where it was, and he hit him around the face once. Brought bird home and he was just "off" for a couple of days -- falling down, balance issues, lethargic, etc. Finally decided that a combination of the heat and spray was causing it, and probably about to kill him! Gave him a good bath - noticed that the lice hadn't abated at all *grr* - and kept him in the basement for a few hours to cool off. Next day, got Permethrin at Rural King, that was what was reccomended. Mixed it up according to directions and dunked bird, working the water into his feathers esp. around his muff. It's now 4 or 5 days later and not only does he still have them, it's worse! The clumps were the size of a kernal of corn, now more like a raisin. And the three hens he hangs out with have them too. They are polish and have them in their little muffs just like him - not anywhere else. SOOOO, what should I be doing to stop and treat this, 'cause what I'm doing isn't cutting it. Also, do I need to do something to the coop?