The best composting toilets let you use a toilet without plumbing or a septic connection. A composting toilet separates liquids and solids and uses a dry medium, such as coconut coir or peat, to control odor and break down waste.
We compared seven toilets and one solidifying powder. Our quick verdict: the Nature’s Head is the best overall, the OGO Origin is the best compact pick for vans, and the Separett Villa is the best for cabins.
Best Composting Toilets: Top Picks Compared
Our top picks are the Separett Villa Urine-Separating Compost Toilet, the CRAZYTHUR Poo Powder Portable Toilet Gel, and the BOXIO Portable Toilet: Compact Dry Separation.
Pros
- Compact size fits in tight spaces, providing more legroom and a clean layout.
- No manual cranking thanks to the electric agitator, reducing effort and mess.
- Urine-diverting system prevents odors and eliminates the need for black tank maintenance.
- Easy installation with included components and no vent tube required in many setups.
- Excellent customer service and positive user feedback for reliability and support.
Cons
- Electric agitator can stop working, requiring manual intervention with a stick to rotate.
- Solids bin may need scraping after each use, and the trap door design can allow urine to leak if not properly closed.
- Complimentary mulch has a strong odor; many users prefer alternative bedding like horse pellets.
The OGO Origin is a compact composting toilet designed for vans, RVs, boats, and tiny homes where space is at a premium. With a footprint of just 15 by 16 inches, it fits into corners that other composting toilets cannot, giving you more legroom and a cleaner bathroom layout. This toilet is built for off-grid living and offers a modern, Scandinavian-style aesthetic that blends into premium builds.
Its standout feature is the push-button electric agitator, which uses a 12V motor to mix solids with a single tap. This eliminates the need for manual cranking, making daily use effortless and reducing mess. The urine-diverting system separates liquids into a 2.4-gallon bottle, while solids stay dry in the rear bin, preventing sewage odor and allowing safe storage. Users report no smell when properly maintained, and many find it works well without a vent tube.
Build quality is solid with durable polypropylene construction and a quiet fan ventilation system. The toilet is easy to install with included mounting screws, power cable, and venting hose. Customer service is highly praised for being responsive and helpful. However, some users have experienced issues with the electric agitator failing, requiring manual intervention. The trap door design can also allow urine to leak if not closed properly, and the complimentary mulch has a strong odor that some find unpleasant.
Overall, the OGO Origin is a great choice for those needing a compact, odor-free toilet for tight spaces. It offers convenience and a modern look, but potential buyers should be aware of possible mechanical issues and the need for careful maintenance. Despite these drawbacks, it remains a popular option among van lifers and tiny home owners.
Brand: OGO
Model: OGO White 2021
Item Type: OGO Origin
Color: White
Shape: Rectangular
Material: Polypropylene, High Density Polyethylene
Seat Material: Polypropylene (PP)
Item Weight: 28 pounds
Footprint: 15 x 16 inches
Urine Tank Capacity: 2.4 gallons
Solids Bin Capacity: 25-30 uses
Power: 12V DC (electric agitator)
Installation Method: Floor Mounted
Included Components: Mounting Screws, Power Cable, Venting Hose, OGO Compost Toilet
Manufacturer Part Number: ogo-wht-2101
UPC: 195893543083
Pros
- Completely waterless operation saves water and eliminates plumbing.
- High capacity allows extended use between emptying cycles.
- Low maintenance with no chemicals or complex procedures.
- Versatile for various off-grid applications including RVs and cabins.
- Durable build with a comfortable PVC seat and paper material.
Cons
- Higher upfront cost compared to conventional toilets.
- Requires regular emptying of solid and liquid containers.
- May have a learning curve for optimal composting management.
The Separett Villa is a waterless composting toilet designed for off-grid living. It uses urine-separating technology to keep solids dry and minimize odors, making it a popular choice for homesteads, cabins, and converted school buses.
Its standout feature is the no-water, no-plumbing operation. The high-capacity design means you can go longer between emptying cycles, which is a major plus for full-time users. The system requires no chemical additives or mixing, simplifying daily maintenance.
Build quality is solid with a durable paper construction and a comfortable PVC seat. The wall-mounted installation saves floor space, though it requires a sturdy wall. The oblong shape and 34-pound weight make it manageable for one person to install.
One potential drawback is the initial cost, which is higher than standard toilets. Also, you need to manage the compost and urine containers regularly. Some users might need time to adjust to the composting process.
Overall, the Separett Villa is an excellent investment for anyone seeking a reliable, eco-friendly off-grid toilet. Its ease of use and high capacity make it a top choice in the waterless toilet category.
Brand: Separett
Model: 1255-01
Color: White
Shape: Oblong
Dimensions: 26.5 inches deep x 18 inches wide x 21.3 inches high
Weight: 34 pounds
Material: Paper (seat: PVC)
Installation: Wall mounted
Capacity: High capacity for extended use
Operation: Urine-separating, waterless, no additives
Pros
- No need for electricity, plumbing, or dump stations.
- Odor-free operation with proper use of composting medium.
- Compact and lightweight for easy portability.
- Simple bag system makes cleanup fast and hassle-free.
- Sturdy construction suitable for rugged outdoor conditions.
Cons
- Seat height is low, which may be uncomfortable for taller users or those with knee issues.
- Urine diverter requires precise positioning to avoid leaks, especially for female users.
- Some users report needing to clean the basin between uses to prevent condensation.
The OGO NOMAD is a self-contained composting toilet designed for adventurers who need a portable, no-plumbing solution. It is ideal for truck campers, rooftop tents, small boats, and off-grid camping. With a urine-diverting system and simple bag setup, it eliminates the need for black tanks or chemical toilets.
The urine-diverting system separates liquids and solids to prevent odors without electricity or chemicals. Users report that with proper use of coco coir or pine shavings, the toilet remains odor-free. The compact footprint (15.4 x 13 x 12.38 inches) and lightweight 12-pound design make it easy to transport and store.
Reviews highlight easy assembly and sturdy polypropylene construction that withstands rugged conditions. The bag system uses standard 8-gallon bags, making cleanup quick. However, some users note that the seat height is low, which may be uncomfortable for taller individuals or those with bad knees.
The urine diverter requires careful positioning to avoid leaks, especially for female users. A few reviewers mention that cleaning the basin between uses is necessary to prevent condensation. Despite these minor issues, the toilet is praised for its durability and simplicity.
Overall, the OGO NOMAD offers a practical and affordable composting toilet for outdoor enthusiasts who value mobility and ease of use. Its odor-free design and no-power requirement make it a great choice for extended trips away from dump stations. With a little practice, it becomes a reliable part of any camping setup.
Brand: OGO
Model: NOMAD (nom-bas-2024)
Dimensions: 15.4"D x 13"W x 12.38"H
Weight: 12 pounds
Material: Polypropylene (PP)
Color: White
Included Components: Compostable Bags (x2), Coco Coir, Spray Bottle
Pros
- No odor even in enclosed spaces.
- Large waste capacity reduces frequency of emptying.
- Simple, quick maintenance process.
- Comprehensive 5-year warranty and responsive customer service.
- Lightweight and easy to install without professional help.
Cons
- Higher upfront cost compared to traditional flush toilets.
- Requires basic understanding of composting principles for best results.
- Plastic construction may not suit all aesthetic preferences.
The Nature's Head Self Contained Composting Toilet is a top-rated solution for those seeking an off-grid, waterless toilet. Designed for RVs, cabins, tiny homes, and boats, it combines practicality with user-friendly features. Its spider handle design allows for easy turning even in cramped spaces, making it a favorite among full-time travelers and remote dwellers.
Standout features include its absolutely odor-free operation, thanks to a well-engineered composting system that separates liquids and solids. Users report no smells even after weeks of use. The huge 2-gallon solids tank means two people can go 4-6 weeks between emptying, and the process takes just 5 minutes with no messy contact.
The build quality is solid: a durable plastic construction that is lightweight at 28 pounds, with a rectangular shape that fits standard toilet footprints. The seat is comfortable, and the unit is easy to install on a wall or floor. The 5-year warranty and direct customer support add peace of mind, with the brand promising unbeatable service.
Potential drawbacks include the higher price point compared to conventional toilets, and the need to follow composting guidelines (e.g., proper carbon material addition) for optimal performance. The plastic material may not appeal to those wanting a more traditional ceramic look. However, for its intended use, these are minor trade-offs.
Overall, the Nature's Head Composting Toilet delivers on its promises: no odor, low maintenance, and large capacity. It is ideal for anyone living off-grid or in a small space who wants a reliable, eco-friendly sanitation solution. With thousands of positive reviews, it is a proven performer.
Brand: Nature's Head
Model: Spider Handle
Color: White
Material: Plastic
Dimensions: 20.98" D x 19.02" W x 20.98" H
Weight: 28 pounds
Installation Method: Wall
Warranty: 5 Years
Capacity: Supports 2 people full-time (empty every 4-6 weeks)
UPC: 853647003022, 689466406375, 733353592945
Pros
- Eco-friendly and biodegradable, safe for the environment.
- Rapid solidification saves time and reduces mess.
- Compact, portable sachets are convenient to carry.
- Effective odor control and leak prevention.
- Versatile for multiple applications, from camping to caregiving.
Cons
- Primarily designed for liquid waste; not suitable for solid waste.
- Requires a separate toilet bag or liner to hold waste.
- The lemon scent may be too strong for some users.
The CRAZYTHUR Poo Powder is an innovative portable toilet treatment designed for outdoor enthusiasts, RV travelers, boaters, and caregivers. It is an eco-friendly, biodegradable gel powder that transforms liquid waste into a solid gel, making disposal hassle-free and environmentally responsible.
The standout feature is its rapid gelling action, which is twice as fast as traditional toilet powders. Within minutes, urine and other liquids are solidified, locking in odors and preventing leaks. Each 10g sachet treats up to 1000ml of water or 650ml of urine, and the included 50-pack ensures you have ample supply for extended trips. The pleasant lemon scent also helps to deter wildlife, adding an extra layer of safety in the wilderness.
Design and build quality are excellent, with each sachet individually packed for portability. The lightweight, compact packaging fits easily into pockets, backpacks, or glove compartments, making it ideal for on-the-go use. The powder works with all types of portable toilets and offers two application methods for maximum flexibility.
One potential drawback is that this product is primarily for liquid waste and may not be effective for solid waste. Additionally, users need to ensure waste is collected in a compatible bag or liner before application, as the gel does not include a disposal bag. Some users might find the lemon scent slightly strong, but it is generally pleasant and effective.
Overall, the CRAZYTHUR Poo Powder is a superior choice for anyone seeking a convenient, eco-friendly sanitation solution. Its fast action, portability, and versatility make it a top pick in camping hygiene products. For campers, RVers, and outdoor adventurers, this product delivers reliable performance and peace of mind.
Pros
- Extremely lightweight and compact for easy portability
- Adjustable seat height accommodates different users and sitting preferences
- Odor-free operation without chemicals or electricity
- Sturdy build supports up to 330.7 lbs
- Simple to clean and maintain
Cons
- Plastic construction may feel less premium than wooden or metal alternatives
- Containers need regular emptying after limited use (8-12 solid waste uses)
- Seat height adjustment is limited to two preset positions, not infinitely variable
The TROBOLO WandaGO is a portable composting toilet designed for outdoor enthusiasts, campers, and vanlifers who need a reliable sanitation solution without the need for water, chemicals, or electricity. Weighing just 10.4 lbs and with compact dimensions, it easily fits into tight storage spaces in campervans or RVs.
Its standout feature is the adjustable seat height, which can be set to either 12.0 or 17.2 inches. This ergonomic design ensures comfort for users of different sizes, and the unit is tested to support up to 330.7 lbs. The urine diverting system separates liquids and solids cleanly, preventing odors and spills effectively.
In real-world use, the WandaGO delivers an odor-free experience thanks to the TROBOLO SafeShell System. The securely closing lid and fastening system make it travel-ready, while the built-in urine level indicator helps you monitor when the liquid container needs emptying. The solids container holds enough for 8-12 uses, and the liquids container for 10-20 uses, which is reasonable for short trips.
One potential drawback is the plastic construction, which may not feel as durable as metal or wood alternatives. Additionally, the seat height is only adjustable to two positions, which might not suit everyone perfectly. Regular emptying is required, so it's best for shorter excursions or as a backup toilet.
Overall, the TROBOLO WandaGO is a well-designed portable composting toilet that balances lightweight portability with practical features. It is ideal for campers who prioritize convenience and hygiene without the need for complex installations. For its price and performance, it earns a solid recommendation for outdoor adventures.
Brand: TROBOLO
Model: WandaGO (P1)
Dimensions: 15.0" D x 13.4" W x 12.4" H
Weight: 10.4 lbs (10 lbs item weight)
Material: Plastic (Polypropylene seat)
Seat Height: Adjustable to 12.0" or 17.2"
Weight Capacity: Up to 330.7 lbs
Liquid Container: 1.2 gallons
Solid Container: 1.7 gallons
Usage: 10-20 urinations, 8-12 defecations per fill
Included: Toilet, liquids container, solids container
Warranty: 2 years manufacturer warranty
Pros
- Excellent build quality and durability, often lasting years of continuous use.
- Effective odor control due to liquid-solid separation and venting system.
- Simple to operate and maintain with minimal effort.
- Responsive and generous customer support from the manufacturer.
- Compact design fits in small bathrooms or RVs.
Cons
- Requires some initial learning and reading to understand the system fully.
- Additional purchases like a vent kit may be needed for optimal performance in enclosed spaces.
- Higher upfront cost compared to traditional toilets, but saves on water and sewer fees over time.
The Nature's Head Self Contained Composting Toilet is a waterless waste management solution designed for off-grid living, RVs, cabins, and tiny homes. It is ideal for those seeking an eco-friendly alternative to traditional plumbed toilets.
Its innovative foot-spider handle makes emptying the solids container effortless, while the urine diverter keeps liquids separate to minimize odor. Users report excellent performance with consistent use, noting that the toilet composts effectively with minimal smell.
Constructed from heavy-duty plastic, the Nature's Head is built to withstand rugged conditions. The floor-mounted design ensures stability, and the compact footprint fits into tight spaces. Customer reviews highlight the tank-like durability and long lifespan.
Some users note a learning curve to understand the system and recommend reading the manual carefully. For enclosed spaces, an additional vent kit may be necessary to ensure proper airflow. The initial cost is higher than standard toilets, but the long-term savings on water and maintenance offset this.
Overall, the Nature's Head Composting Toilet is a top choice for sustainable sanitation. With outstanding customer support and proven reliability, it is a worthwhile investment for anyone committed to off-grid or eco-conscious living.
Pros
- Large capacity for a compact unit (8-10 uses).
- Odor control with HEMPLITTER and PLUG system.
- Lightweight (11.4 lbs) and portable.
- Chemical-free operation is eco-friendly.
- Easy to clean and dispose of waste.
Cons
- Requires HEMPLITTER and bags, which are consumables.
- No built-in privacy enclosure; needs separate setup.
- May not be ideal for heavy or extended use without frequent emptying.
The BOXIO Toilet is a portable dry separation toilet designed for outdoor enthusiasts who prioritize hygiene and environmental responsibility. It is ideal for van dwellers, boaters, and campers who want a compact, chemical-free sanitation solution that fits tight spaces.
With a capacity of 8-10 uses before disposal, this toilet stands out for its efficiency. The separation system keeps solids and liquids apart, reducing odor and making disposal straightforward. Users can empty solids into trash bags and liquids into a manhole without needing specialized dump stations.
Constructed from durable ABS, HDPE, PP, and stainless steel, the toilet is built to withstand outdoor conditions. Its compact size (14.7" x 11.8" x 11.0") and light weight (11.4 lbs) allow easy transport and storage in vehicles or tents. The included HEMPLITTER and PLUG enhance odor control, ensuring a pleasant experience.
Potential drawbacks include the need for consumables like HEMPLITTER and bags, which add ongoing cost. Also, the toilet lacks a privacy enclosure, so users must create their own setup. For heavy use, emptying may be more frequent than advertised.
Overall, the BOXIO Toilet is a well-engineered portable option for those seeking an eco-friendly, odor-free alternative to chemical toilets. Its high capacity and easy disposal make it a practical choice for short to medium trips.
Our Picks
Self-Contained
- Nature’s Head: a durable, odor-controlled waterless design. Two listings are included.
- OGO Origin: a compact 15-inch design.
- OGO NOMAD: a compact, urine-diverting unit.
Urine-Separating
- Separett Villa: waterless urine separation for cabins and homes.
Portable
- TROBOLO WandaGO: lightweight for campers and van life.
- BOXIO: a compact dry-separation toilet.
Accessory
- CRAZYTHUR Poo Powder: a biodegradable gel that solidifies waste in portable toilets. It is not a toilet itself.
How They Work
Urine is diverted into a separate container, while solids mix with a dry medium. Removing moisture reduces odor and helps the material begin to decompose. You empty the liquid container frequently and the solids container less often.
How to Choose a Composting Toilet
The right choice comes down to deciding where you will use it, checking power needs, considering capacity, and planning venting.
- Decide Where You Will Use It: Vans need compact units, while cabins can fit larger ones.
- Check Power Needs: Some use small fans for ventilation.
- Consider Capacity: Larger containers mean less frequent emptying.
- Plan Venting: A vent hose helps control odor.
- Check Local Rules: Disposal rules vary by location.
For more options, read our guides to the best portable toilets and the best RV toilet.
Comparing the Picks
The OGO Origin is a compact composting toilet with a small footprint, suited to tiny homes, vans, and cabins. The Separett Villa uses urine separation and a fan to support waterless off-grid use. The OGO NOMAD is a self-contained, urine-diverting model designed for mobile setups.
The Composting Process
Most composting toilets separate liquids from solids. Solids are mixed with a bulking material such as coco coir or peat moss, which helps break down waste and control odor. A small fan often vents air outside.
Ventilation
A vent fan and outside vent hose keep odors under control. Plan a route for the vent before installing.
Emptying and Maintenance
Empty the urine container often, and the solids bin less frequently, depending on use. Follow the manufacturer’s guidance and local rules for disposal.
Local Regulations
Some areas regulate composting toilets and waste disposal. Check local codes before relying on one as your primary toilet.
Common Mistakes to Avoid
Do not skip the bulking material. Avoid installing without ventilation, and check local rules before buying composting toilets.
Bulking Material
Coco coir and peat moss are common bulking materials. Add a scoop after each use, as directed, to help absorb moisture and reduce odor.
Power Needs
Many composting toilets use a small fan that runs on 12V or standard power. Off-grid users can run fans from solar panels and batteries.
Choosing Size
Compact models fit vans and tiny homes. Larger models suit cabins and full-time use with more people.
Odor Control
Keep the urine container emptied often, add bulking material regularly, and keep the vent fan running.
Cost Over Time
Composting toilets need no water or sewer connection, which can save money in off-grid homes. Budget for bulking material, replacement fans, and occasional parts.
Installation Considerations
Measure floor space, plan the vent route, and confirm power for the fan before ordering. Some models need a minimum distance from walls for the crank handle or lid.
Final Verdict on the Best Composting Toilets
The best composting toilets for most off-grid users start with the Nature’s Head. Choose the OGO Origin for tight van builds or the Separett Villa for a cabin.
Composting Toilets FAQs
Common questions from buyers include “Do toilets smell?”, “How often do I empty it?”, and “Is it legal at home?”.
Do toilets smell?
When used and vented properly, odor is minimal.
How often do I empty it?
Liquids every few days, and solids every few weeks, depending on use.
Is it legal at home?
Rules vary, so check local codes.
For more bathroom essentials, browse our best toilets category.
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