ECOJOHN� Sr is an environmentally friendly toilet that leads the way in the waterless disposal of waste. It was developed to solve economical and logistical problems in remote applications; In many applications there is no sewage system available; septic tanks may not be allowed; or it is simply to difficult to install a regular toilet. In these situations the Sr model is ideal. ECOJOHN� Sr is a waterless self-contained toilet that incinerates the waste into a sterile ash that needs to be emptied only a few times per year. Installing the Sr is also very easy. Simply connect the chimney system (than comes with the purchase), hook up the Propane and power connection, and the toilet is ready to use. Thus, whether you have a cabin, a pool house, a guest house, or a camp ground, the Sr model is a great solution that can make your living condition much more comfortable and cleaner.