I have received so much excellent advice, but I don't want to combine things and overdo it or hurt the girls. I have been adding ACV for two days, but the pasty butt is back (just the silkies). I clean them, then apply baby oil (no need to trim feathers, their little bottoms are quite naked). I need to do something more, so can I go with molasses in the water (+ ACV???), and corn flour in their food every three days? Is this over doing it? Will the ACV and molasses be ok together in their water? Will this give the BO the runs (she has so afr been exempt from this delightful malady). Ugh. Help!