Extended pathogen-safe curing (secondary bin)

A composting toilet's fresh output is not yet safe to use as soil amendment, pathogen die-off needs sustained thermophilic temperatures (above 55C) for days to weeks, followed by an undisturbed curing period of at least one to two years, during which the material is kept in a dedicated secondary bin, physically separate from kitchen/garden compost to avoid cross-contaminating a food-safe compost stream with human pathogens. This is the missing safety step between the composting and urine-diverting toilets' fresh output and any use of that output, not an optional refinement.

Cost
Low
Upkeep
Occasional
Lifespan
Not applicable, a process/holding period (1-2 years curing), not a physical component; the secondary bin structure itself matches the managed humanure composting figure
Embodied carbon
Low
Space / material use
Medium
Output timing
Continuous process
Skill to repair
Basic
Regulation (FR example)
Dry toilets are explicitly permitted (arrete du 7 septembre 2009 modifie) but must be declared to the SPANC, and byproducts must be composted on the property without any discharge or nuisance to neighbours.

Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.

Inputs

Outputs

What this page does not tell you

No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.