The Wynn's are full time RVers who converted from the usual black water tank based RV toilet to a compact Nature's Head commercial composting toilet. (builditsolar.com)
Of course, RV flush toilets use less water than household toilets, but they also come with the task of emptying the dreaded black water tank. (tinyhousegiantjourney.com)
Through my discussions with RV owners — and, yes, we talk about toilets — I'm told a 40 - gallon black water tank will last two people about 8 - 10 days. (tinyhousegiantjourney.com)