I brought home two chicks from Orscheln's on Thu. No dates on the brooders but I think the RIR was about a week old and the BO was about 3 days. Anyway, the little BO had pasty butt. I tried repeatedly to clean her with a wet paper towel with no result. I even put a glob of vaseline on it to soak, hoping it would loosen. Didn't help. So I took her to the sink and dipped a swab under warm running water and then let the drops trickle over her rear. Within 10 or 15 minutes she was all clean. I blotted dry and put her back under the light. The hardest part was listening to her sister's hysterical peeping. The RIR totally loses it if she can't see the BO. (small tangent) My daughter told me years ago that my fun button was broken. Nope. My fun is just WAY different from most people's. Chicks are too cool fun!