Mark Ortega: Glacier Bay NP, AK
"what I do see and is vital to us is meeting NPS Director's Orders banning pit toilet usage, no associated smells within facilities, and lessening volume/easy of transport of solids that need to be disposed of. This unit is viable method for our back-country issues.
I've been working at Smith Rock since January of of 2016 and have become familiar with both the TTS system as well as the Phoenix composting systems that the park has been using since 1993.
It's the consensus of myself and the staff that the TTS urine diverting system is a far superior design. With proper venting, the TTS has limited to no smell, while the Phoenix smells strongly of ammonia due to failing urine evaporators. The composting material collection bin is very low maintenance and staff has not had to remove the compost since I started here. The material only needs raked about once a month in peak use. This is opposed to the Phoenix systems that are on their second emptying since my term here began and needs rotated on an almost daily basis.
With the TTS system the composted material turns into, essentially, soil where as the current system still contains a high percentage of raw wastes after several months.
The TTS has no electronic parts other than the exhaust fan and doesn't not need a urine evaporation system or digital controller like the system we are currently using. The simplistic design of the TTS means there are fewer parts to break, program and fail.