PUFF!Lets starts classifying the individuals to be trained. Most peoples are mistaken about it, but choosing the yukkuri is an easy part in the training process.The classification process is easy. If any of them say "geezer", "slave" or "puff", dispose of them immediately. Through this process, usually 80% will be eliminated.To classify them, pick them out of the box one by one. In this stage, any kind of small box is fine. For our case, we'll use an insect box.