I clean up chick butts by running warm to the touch water over the rear end of the chick. I put on a disposable glove and massage the poo until it softens. DO NOT pull on the poo, this can cause umbilical issues. Once all the poo is gone. Pat the chick dry and blow dry the rest of the way. I skip the blow drying because I have a heater plate which gets the chick nice and dry in 15-20 min without the loud noise, but with a heat lamp, the chick will need to be blown dry.