The quick specs: -Waterless toilet. -Urine diversion eliminates the combination of liquids and solids, dramatically reducing odor and volume. -Urine is diverted out the back of the unit to your choice of disposal: whether that is a sewer hookup, a grey water tank, a urine storage tank, soak away tank or grey water drainage. -Solids drop into a bucket receptacle lined with a compostable bag. When “full” it is removed and the composting process continued outside. -You cannot see into the toilet hole due to a visual block that is moved to the side during use with a nifty seat pressure activated mechanism. -a continually running small fan vents the toilet compartment to the outside and aids in solids dehydration, thus reducing the volume.