A composting toilet installed in a sailboat's marine head compartment

Best Composting Toilets for Boats & Marine Use (2026)

Best composting toilets for boats and marine use: Air Head and Nature’s Head for liveaboards, BOXIO/OGO Nomad/Trelino for day boaters, plus marine-specific considerations.

A compact composting toilet discreetly placed in a cozy backyard she-shed

Composting Toilets for Backyard Sheds & She-Sheds

Composting toilets for backyard sheds and she-sheds: portable options for occasional use, self-contained units for daily use, and legal considerations.

Hands assembling a DIY bucket-based composting toilet on a workbench

How to Build a DIY Composting Toilet

How to build a DIY composting toilet: the core principles, the two main build approaches, what to buy vs. build yourself, and whether DIY is right for you.

Printed building plans beside a laptop showing a DIY tutorial video

DIY Composting Toilet Plans: Free vs. Paid Options

DIY composting toilet plans compared: what free resources typically offer versus paid plans, plus commercial diverter kits as a useful middle ground.

A finished 5-gallon bucket composting toilet with a snap-on seat lid

5-Gallon Bucket Composting Toilet: Full Build Guide

A complete 5-gallon bucket composting toilet build guide: materials, costs, step-by-step assembly, maintenance, and common mistakes to avoid.

Three piles of sawdust, coco coir, and peat moss shown side by side

Sawdust vs. Coco Coir vs. Peat Moss: Which Is Best?

Sawdust vs. coco coir vs. peat moss compared for composting toilets: moisture absorption, prep time, cost, and which material fits which type of unit.

A simple bucket-based composting toilet setup with a small budget of coins nearby

Cheapest Way to Start a Composting Toilet

The cheapest ways to start a composting toilet, from a $15 bucket setup to a $300 manufactured unit, with honest tradeoffs at every budget tier.

A urine diverter component being fitted into a bucket during a DIY build

DIY Urine Diverter Guide: Build or Buy

A complete DIY urine diverter guide: how to build one from a second bucket, purchased diverter styles and pricing, installation, and troubleshooting.

A flat-lay of composting toilet DIY parts including a bucket, diverter, and carbon additive

Composting Toilet Parts List: What You Actually Need

A complete composting toilet parts list organized by function โ€” solids, liquids, odor control, ventilation, tools, and cleaning supplies โ€” with rough costs.

Several composting toilets of different sizes lined up for comparison

Composting Toilet Size Chart: Which Fits Your Space

A complete composting toilet size chart comparing every model covered on this site by exact footprint, from smallest portable units to cabin-scale systems.