Thinktank Waterless Toilets have numerous advantages, and will save you money when compared to other toilets. 1) Thinktank Waterless Toilets are virtually airtight under normal operating conditions! They draw ventilation from outside – in contrast to other toilets which draw ventilation air from the bathroom area. With other toilets, you are rapidly blowing expensively heated or cooled air outside. This saves a great deal of money over time, is far more efficient, and environmentally friendly. 2) MUCH EASIER TO CLEAN! Most waterless toilets have a bowl, with a small trap door for solid waste. A mess results, every time. The Thinktank Waterless toilet utilizes a large chute, with vertical walls. It needs far less cleaning. 3) Urine exits the toilet via a drain tube, 7 inches high, at the rear of the toilet. There is a 5′ flexible drain hose that you can lead to the location of your choosing. This is typically a French drain, gray water system, or tank. 4) Very quick and easy to empty. Waste is contained inside a bag. It's very clean and simple. No peat moss or other material has to be added. 5) All metal parts are high quality marine grade stainless steel.