You are correct.
Instructions come with it. I think it varies. You can ask on Dr. Shulze's forum here at curezone. Its probably around a month. Some may go longer. But you also should take Clarkia by Hulda Clark which you will find at drclarkstore.com or Kroeger's Wormwood formula which is very effective and I think less expensive. You may notice that your stool may change as you cleanse your body. Eventually you will be very clean inside and there will be no bad odors at all anymore. Good luck.
Gracey