Composting Toilets

A separating composting toilet keeps liquids and solids apart: urine goes forward into a canister you pour out, solids drop into a lined container with a scoop of litter and dry. No water, no chemicals, no black tank, no hookup. It is the right buy for a van, a boat, an off-grid cabin, a garden office or a tiny home where plumbing is not an option.

Pick by space and by how many people use it. The Evo S and Origin S are the compact ones for a van or a tent. The M sizes add capacity and a taller seat for a Sprinter or a truck camper. The Evo L and Origin L sit at household height with 2.6 gallon containers for an RV, a cabin or a tiny home.

Evo is the lighter ABS line with a soft-close lid in white or dark gray; Origin has a polyethylene body and a birch wood lid. Add a spare canister, bags and, on the M and L, the SOG fan set for long trips.

How the separator works and which size fits explains the rest.