Trelino® Origin L Portable Composting Toilet
High-Capacity Dry Toilet for RVs, Vans & Off-Grid Living
The Trelino® Origin L Composting Toilet offers the perfect combination of comfort, capacity, and durability for full-time travelers and off-grid living. Designed and manufactured in Germany, this premium dry toilet features a comfortable seat height, a large waste capacity, and a durable body with a sturdy removable wooden lid.
Ideal for RVs, camper vans, mobile homes, tiny houses, and off-grid cabins, the Origin L provides a reliable sanitation solution without the need for plumbing, water, or chemicals.
Using a urine-diverting separation system, the toilet keeps liquids and solids separate to prevent odors and simplify waste disposal. The result is a clean, environmentally friendly system that delivers the comfort of home while maintaining complete independence on the road.
Key Features
Comfortable Seating Height
Designed with an ergonomic height that closely resembles a traditional household toilet.
Large Waste Capacity
Both the urine and solids containers hold 2.6 gallons, allowing longer use between emptying.
Durable Wooden Lid
A sturdy multilayer birch wood lid provides durability while adding a premium look to your RV interior.
Magnetic Lid Attachment
Strong magnets keep the lid securely closed while traveling.
Odor-Free Operation
The urine-diverting separation system prevents unpleasant smells by keeping liquids and solids separate.
No Water or Chemicals Required
Operate completely off-grid without plumbing systems or chemical additives.
Hygienic & Easy to Maintain
Removable containers allow simple emptying and easy cleaning.
Water-Resistant Construction
The polyethylene body allows use in wet environments such as showers.
Capacity
Urine Container
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2.6 gallon capacity
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Holds approximately 12–22 uses
Solids Container
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2.6 gallon capacity
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Holds approximately 11–20 uses
The larger containers make the Origin L ideal for full-time travel or multi-person use.
Dimensions & Weight
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Width: 13.0 in
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Depth: 15.4 in
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Height: 18.1 in
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Weight: 15.0 lbs
The Origin L offers greater comfort and capacity while remaining compact enough for RV and van installations.
Built for Mobile Living
Ideal for Full-Time Travel
The larger size and comfortable height make this model perfect for long-term van life and RV living.
Sustainable Sanitation
No chemicals and no water required, making it a more environmentally friendly solution.
Independent Travel
Travel freely without relying on dump stations or plumbing systems.
Leak-Proof Construction
Durable materials protect against spills and road vibrations.
Stable & Durable Body
The robust design is built to withstand everyday travel and outdoor use.
Optional Fan Installation
A ventilation fan can be installed to accelerate drying and reduce condensation.
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A hole must be drilled in the housing
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Recommended drill size: 1.53 inches using a step drill
Materials
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Body & Containers: Recyclable polyethylene (PE) resistant to acids and chemicals
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Lid: Waterproof glued multilayer birch wood
How a Composting Toilet Works
A composting toilet uses a urine-diverting separation system to keep liquids and solids separate.
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The separator insert directs urine into the canister
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Solids are collected in a bag-lined container
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A drying material such as coconut coir or animal bedding absorbs moisture and prevents odors
This process keeps the toilet dry, hygienic, and odor-free.
Frequently Asked Questions
Why doesn’t a composting toilet smell?
Odors occur when liquids and solids mix. By separating them and drying the solids with litter material, odor buildup is prevented.
Do I need to change the bag after every use?
No. The solids container can hold multiple uses before needing to be emptied, depending on usage.
What litter material should I use?
Recommended options include:
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Coconut coir
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Small animal bedding
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Other absorbent natural litter materials
Do I need a fan?
The Origin L works without a fan, but installing one can speed up drying cycles, especially with longer emptying intervals or multiple users.
How do I dispose of the waste?
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Urine: Pour into a toilet connected to a sewer system
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Solids: Dispose of the bag like a dog waste bag or diaper according to local regulations
How do I clean the toilet?
Cleaning is simple:
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Wipe the seat and bowl as needed
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Empty and rinse the urine container every few days
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Replace the solids bag when full
Cleaning solutions such as vinegar or citric acid work well.
What Makes Trelino® Different
Trelino® toilets are manufactured in Germany under strict production standards and fair labor practices. Designed to reduce disposable waste culture, each toilet is built from high-quality materials intended for long-term durability.
What’s Included
✔ Exterior body
✔ Wooden lid with securing magnets
✔ Toilet seat with integrated separator
✔ Urine canister (2.6 gal)
✔ Solids container (2.6 gal)
✔ Lid with membrane closure + spare lid
✔ 10 waste bags made from recycled materials
Shipping Information
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Free shipping within the United States
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Estimated shipping time: 6 weeks
