Choosing the right composting toilet for a tiny home involves balancing size, ease of installation, maintenance, and odor control. The Sun-Mar GTG stands out as the best overall for its reliable performance and straightforward operation. For portability, the TROBOLO WandaGO Lite excels, offering a lightweight solution perfect for off-grid living. If space-saving is your priority, the Separett Tiny provides a compact design that doesn’t sacrifice functionality. However, tradeoffs exist, like higher upfront costs or more complex setup. Keep reading to explore each option in detail and find the best fit for your tiny home.
Get oils, diffusers and self-care delivered free with Prime
- Fast, free delivery on millions of items
- Prime Video, Amazon Music and more included
- Member-only deals all year
Key Takeaways
- The top-ranking models effectively balance size, ease of use, and odor control for tiny living.
- Portability features are crucial if you plan to move or camp frequently with your tiny home.
- Urine separation systems often improve odor management but can add complexity and cost.
- Higher-end models tend to offer better durability and user experience, justifying the price.
- Choosing a toilet depends heavily on how much maintenance you’re willing to perform regularly.
| Sun-Mar GTG Self-Contained Urine Diverting Compost Toilet |  | Best Overall for Low-Maintenance Tiny Home Use | Brand: Sun-Mar | Model Number: GTG-011 | Dimensions: H: 19.8″ / W: 15.75″ / D: 24″ | VIEW ON AMAZON | See Our Full Breakdown |
| TROBOLO WandaGO Lite Composting Toilet, Portable Camping Dry Toilet with Urine Diverting System |  | Best for Portable Camping and Mobile Tiny Living | Dimensions: 11.8” x 15.0” x 13.4” | Weight: 7.9 lbs | Supports: up to 330.7 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Separett Weekend Prime Urine-Separating Compost Toilet |  | Best Fully Manual Off-Grid Solution | Model Number: 1172-02 | Number of Items: 1 | Brand Name: Separett | VIEW ON AMAZON | See Our Full Breakdown |
| Portable Waterless Dry Flush Toilet, LE-330B, Gray |  | Best for Camping and Temporary Off-Grid Use | Model Number: LE-330 | Brand: modiwell | Weight: 17 pounds | VIEW ON AMAZON | See Our Full Breakdown |
| TROBOLO WandaGO Composting Toilet, Portable Outdoor Camping Toilet, Urine Diverting Dry Toilet with Height Adjustment |  | Best for Outdoor Camping and Mobile Tiny Home Use | Dimensions: 12.3” (H) x 15.0” (D) x 13.4” (W) | Weight: 10.4 lbs | Seat Height Options: 12.0” or 17.2” | VIEW ON AMAZON | See Our Full Breakdown |
| OGO NOMAD Portable Composting Toilet – RV, Van, Camping & Boat, Waterless |  | Best for Rugged Outdoor Use | Brand: OGO | Model Number: nom-bas-2024 | Included Components: Compostable Bags (x2), Single Bag of Coco Coir, Spray Bottle for Cleaning | VIEW ON AMAZON | See Our Full Breakdown |
| Separett Tiny Self-Contained Urine-Separating Compost Toilet |  | Best for Space-Saving, Off-Grid Living | Capacity: 2 gallons for urine container | Included Components: solid waste container, lid, urine container, others | Power Supply: 12V / 110-240V | VIEW ON AMAZON | See Our Full Breakdown |
| Kohree Portable RV Toilet, Large Camping Toilet Porta Potty, 5.8 Gallon |  | Best for Capacity and Outdoor Convenience | Dimensions: 14.4″ x 16.3″ x 16.3″ | Fresh Water Tank Capacity: 3.2 gallons | Waste Tank Capacity: 5.8 gallons | VIEW ON AMAZON | See Our Full Breakdown |
| LE-310 Compact Dry Flush Toilet for Van Life and Off-Grid, Gray |  | Best for Automated, Odor-Free Dry Flushing | Model Number: Loo Seal Series – Gray | Dimensions: 17″ x 16″ x 11″ | Battery Capacity: 5200mAh | VIEW ON AMAZON | See Our Full Breakdown |
| composting toilets for tiny home | Model Number | Dimensions |
|---|---|---|
| Sun-Mar GTG Self-Contained Uri | GTG-011 | H: 19.8" / W: 15.75" / D: 24" |
| TROBOLO WandaGO Lite Compostin | — | 11.8” x 15.0” x 13.4” |
| Separett Weekend Prime Urine-S | 1172-02 | — |
| Portable Waterless Dry Flush T | LE-330 | — |
| TROBOLO WandaGO Composting Toi | — | 12.3” (H) x 15.0” (D) x 13.4” (W) |
| OGO NOMAD Portable Composting | nom-bas-2024 | — |
| Separett Tiny Self-Contained U | — | — |
| Kohree Portable RV Toilet | — | 14.4" x 16.3" x 16.3" |
| LE-310 Compact Dry Flush Toile | Loo Seal Series – Gray | 17" x 16" x 11" |
More Details on Our Top Picks
Sun-Mar GTG Self-Contained Urine Diverting Compost Toilet
The Sun-Mar GTG stands out for its two-chamber design that separates solid and liquid waste, making it a highly hands-off, waterless solution suitable for tiny homes, cabins, or RVs where minimal upkeep is key. Compared to the Separett Weekend Prime, which is fully manual and requires more handling, the GTG offers automatic waste separation with an integrated fan for odor control, simplifying maintenance. However, it depends on a 12V power source, which might be a drawback in off-grid settings. Its unlimited capacity makes it ideal for continuous use without frequent emptying, but neglecting the fan or poor ventilation can lead to odors. Overall, this model is perfect for those seeking a plug-and-play, eco-friendly composting toilet that requires little daily effort.
Pros:- Easy installation in minutes
- Low maintenance operation
- Waterless and environmentally friendly
- Unlimited capacity for continuous use
Cons:- Requires electrical connection for the fan
- May emit odors if not properly maintained
Best for: Tiny homeowners seeking a low-maintenance, reliable composting toilet with minimal manual intervention
Not ideal for: Off-grid users with no electrical power or those uncomfortable with occasional odor management
- Brand:Sun-Mar
- Model Number:GTG-011
- Dimensions:H: 19.8″ / W: 15.75″ / D: 24″
- Seat Height:18″
- Included Components:Compost Magic, Hardware kit
- Power:12V fan
- Capacity:Unlimited
Our verdict“This option suits tiny home dwellers who prioritize ease of use and minimal upkeep over off-grid independence.”
TROBOLO WandaGO Lite Composting Toilet, Portable Camping Dry Toilet with Urine Diverting System
The TROBOLO WandaGO Lite excels for its compact, lightweight design that makes it perfect for camping, RVing, or tiny homes on wheels. Its odorless, chemical-free system with urine diversion supports multiple uses before needing to be emptied, offering greater convenience than the more traditional, manual options like the Separett Weekend Prime. However, its limited number of uses—around 10-20 for urination and 8-12 for defecation—means it needs frequent emptying, which might not suit long-term tiny home setups. Its ergonomic seat and travel-ready latch make it ideal for those who value portability and simplicity. This model is best for users who want a clean, odorless, and easy-to-carry solution for short-term or mobile use.
Pros:- Lightweight and space-saving design
- Odorless, chemical-free operation
- Ergonomic seat with urine level indicator
- Travel-ready with secure lid
Cons:- Limited uses before emptying
- No included accessories for emptying or cleaning
Best for: Campers, tiny home owners on the go, or those needing a portable solution for occasional use
Not ideal for: Full-time tiny home residents seeking high capacity and minimal emptying frequency
- Dimensions:11.8” x 15.0” x 13.4”
- Weight:7.9 lbs
- Supports:up to 330.7 lbs
- Number of Uses:10-20 urination, 8-12 defecation
Our verdict“This pick is ideal for anyone needing a portable, odorless composting toilet for short-term or mobile use rather than permanent tiny home living.”
Separett Weekend Prime Urine-Separating Compost Toilet
The Separett Weekend Prime is a completely manual, waterless system that relies on internal urine diversion, making it an excellent choice for remote cabins, wilderness retreats, or emergency setups. Compared to the Sun-Mar GTG, which requires power, this model operates silently and without electricity, reducing complexity and dependency on power sources. Its durable construction and simple design make it suitable for harsh environments, but it demands manual handling and maintenance—a tradeoff for its off-grid independence. The need for optional accessories, like biobags, adds some extra steps but enhances odor control. This toilet is best for those who value off-grid self-sufficiency over convenience and are comfortable with manual operation.
Pros:- No electricity, water, or sewage needed
- Silent operation with odor reduction
- Durable and easy to use in tough environments
- Fully manual urine diversion
Cons:- Requires manual handling and maintenance
- Limited to specific off-grid or emergency use cases
Best for: Remote cabin owners, wilderness campers, or emergency preparedness setups
Not ideal for: Tiny home residents who prefer automatic or low-maintenance systems requiring less manual handling
- Model Number:1172-02
- Number of Items:1
- Brand Name:Separett
- Components:Liquid container, solids container, manuals
- Best Sellers Rank:#111 in RV Toilets
Our verdict“This toilet suits those seeking a reliable, manual, off-grid composting solution with minimal technological dependence.”
Portable Waterless Dry Flush Toilet, LE-330B, Gray
The LE-330B from modiwell offers a waterless, thermal waste disposal system, eliminating the need for cleaning or emptying during short-term use. Its lightweight design at just 17 pounds and built-in handle make it highly portable, ideal for camping, emergency scenarios, or temporary tiny home setups. While it supports up to 330 pounds, its limited battery capacity of 70-100 uses per charge means frequent recharging is necessary for heavier or prolonged use, which could be inconvenient. The automatic thermal disposal reduces mess and odor, but it’s not designed for long-term, continuous use in a permanent tiny home. This model is well suited for those prioritizing ease of use and portability in short-term scenarios.
Pros:- Waterless with automatic thermal waste disposal
- Lightweight and portable with handle
- Supports up to 330 pounds for adult use
- Rechargeable battery with 70-100 uses per charge
Cons:- Limited number of uses per charge
- Designed mainly for short-term or sporadic use
Best for: Campers, outdoor enthusiasts, or tiny home owners needing a portable, low-maintenance toilet for occasional use
Not ideal for: Full-time tiny home residents seeking a permanent, high-capacity composting solution
- Model Number:LE-330
- Brand:modiwell
- Weight:17 pounds
- Support Capacity:330 pounds
- Battery Capacity:5200 mAh
- Included Components:Charger, coagulant, refill bags, toilet
- Warranty:18 months
Our verdict“This pick is best for outdoor trips or temporary setups where portability and ease of waste management are priorities over long-term capacity.”
TROBOLO WandaGO Composting Toilet, Portable Outdoor Camping Toilet, Urine Diverting Dry Toilet with Height Adjustment
The TROBOLO WandaGO offers a compact, adjustable-height design that makes it highly suitable for outdoor camping and tiny homes on wheels. Its spill-proof, odorless operation combined with a durable, spill-proof system ensures hygiene in outdoor environments, standing out from bulkier models like the Sun-Mar GTG. Its limited capacity—supporting around 10-20 urination uses and 8-12 defecation uses—means it’s better suited for short-term or occasional use, requiring frequent emptying. The adjustable seat height enhances comfort, but the small capacity limits its use as a permanent solution for a tiny home. This model is ideal for those who prioritize portability, outdoor hygiene, and ease of use.
Pros:- Lightweight and compact for outdoor use
- Adjustable, ergonomic seat for comfort
- Odorless, spill-proof operation
- Durable and travel-ready
Cons:- Requires frequent emptying
- Limited capacity for long-term use
Best for: Outdoor campers, tiny home owners needing a portable, hygienic toilet for short trips
Not ideal for: Full-time tiny home residents seeking a high-capacity, permanent composting system
- Dimensions:12.3” (H) x 15.0” (D) x 13.4” (W)
- Weight:10.4 lbs
- Seat Height Options:12.0” or 17.2”
- Supports:up to 330.7 lbs
- Urine Container Capacity:1.2 gal
- Solids Container Capacity:1.7 gal
- Number of Uses:10-20 urination, 8-12 defecation
Our verdict“This toilet is perfect for outdoor adventurers or tiny home users who need a portable sanitation option for short-term use rather than daily living.”
OGO NOMAD Portable Composting Toilet – RV, Van, Camping & Boat, Waterless
The OGO NOMAD stands out for its rugged, waterless design tailored to outdoor adventures where traditional plumbing isn’t an option. Its odor-free urine diverting system makes it comfortable for extended use in remote locations, unlike some portable toilets that struggle with odor control. Compared to the Kohree model, it doesn’t require a large water tank, which is a plus for off-grid scenarios, but it depends on separate composting bags, adding ongoing costs. Its lightweight and durable construction make it portable, yet its capacity is limited, requiring frequent emptying for heavy use or multiple users. This pick makes the most sense for outdoor enthusiasts who prioritize portability and odor control but are prepared for regular maintenance and bag replacements.
Pros:- No electricity or plumbing needed, ideal for remote spots
- Odor-free urine diverting system enhances comfort
- Lightweight and portable for easy transport
Cons:- Requires purchasing compatible composting bags separately
- Limited capacity may require frequent emptying
Best for: Backcountry campers, boaters, and outdoor adventurers needing a rugged, waterless toilet
Not ideal for: Large households or long-term tiny home use where capacity and ease of maintenance matter more than portability
- Brand:OGO
- Model Number:nom-bas-2024
- Included Components:Compostable Bags (x2), Single Bag of Coco Coir, Spray Bottle for Cleaning
- Item Type:RV Camping Toilet
Our verdict“This is best suited for outdoor enthusiasts who need a durable, waterless solution for short-term or remote use.”
Separett Tiny Self-Contained Urine-Separating Compost Toilet
The Separett Tiny offers a compact, waterless solution with urine separation, making it ideal for tiny homes, RVs, and boats where space is at a premium. Its removable waste containers and odor control system deliver a hygienic experience, much like the larger Separett Weekend Prime, but in a smaller footprint. However, it requires installation of ventilation components, which might be a barrier for some DIY users, and its limited 2-gallon capacity can be restrictive for larger households or frequent use. Compared to the LE-310, it lacks the automatic sealing feature but compensates with a sleeker design. This model fits best for those needing a space-efficient, self-contained composting toilet with minimal footprint and reliable odor control.
Pros:- Compact and space-efficient design
- Odor control with waterless operation
- Removable, biodegradable waste containers
Cons:- Requires setup of ventilation components
- Limited capacity for high-volume use
Best for: Tiny home dwellers, RV owners, and off-grid campers prioritizing space efficiency
Not ideal for: Larger households or frequent users who require bigger capacity and simpler setup
- Capacity:2 gallons for urine container
- Included Components:solid waste container, lid, urine container, others
- Power Supply:12V / 110-240V
Our verdict“This is ideal for small spaces needing a reliable, odor-controlled composting toilet with minimal installation hassle.”
Kohree Portable RV Toilet, Large Camping Toilet Porta Potty, 5.8 Gallon
The Kohree Portable RV Toilet offers a substantial 5.8-gallon waste tank, making it suitable for longer trips or small groups where fewer emptying cycles are desirable. Its large capacity and clear level indicators set it apart from smaller, more compact options like the LE-310, but it’s less portable due to its size. Its leak-proof and odor-proof seals contribute to a hygienic experience, yet this model functions more as a portable toilet than a true composting solution, requiring external waste management. Compared with the Separett Tiny, it lacks urine separation and composting features, making it less eco-friendly but more straightforward for users who just need a reliable toilet. This makes it a solid choice for outdoor use when capacity and ease of use outweigh composting features.
Pros:- Large 5.8-gallon capacity reduces frequent emptying
- Leak-proof, odor-proof design for hygiene
- Easy to clean with full coverage water outlet
Cons:- Size may be too large for small vehicle storage
- Not a composting toilet—requires external waste disposal
Best for: Campers, RV travelers, and boaters who need a large, reliable waste tank for outdoor use
Not ideal for: Tiny homes or off-grid living setups where composting or urine separation is desired
- Dimensions:14.4″ x 16.3″ x 16.3″
- Fresh Water Tank Capacity:3.2 gallons
- Waste Tank Capacity:5.8 gallons
Our verdict“Best suited for outdoor use where capacity and straightforward operation are priorities over composting features.”
LE-310 Compact Dry Flush Toilet for Van Life and Off-Grid, Gray
The LE-310 introduces a semi-automatic dry-flush system that combines convenience with odor control, making it a good choice for those seeking a more automated experience. Its automatic waste sealing and rechargeable battery set it apart from manual composting options like the Separett Tiny, offering a more hygienic, hands-off operation. Its support for up to 330 pounds and compact size make it versatile for a range of users, but the need to buy additional waste bags and coagulants adds ongoing costs, and the limited number of uses per charge might require frequent recharging on extended trips. This model suits users who want a dry, odorless toilet that’s easy to operate with minimal setup, yet are willing to handle maintenance of consumables.
Pros:- Automatic waste sealing reduces odor and mess
- Rechargeable battery supports 70–100 uses per charge
- Supports up to 330 lbs with sturdy support legs
Cons:- Requires buying waste bags and coagulants regularly
- Limited uses per charge may necessitate frequent recharging
Best for: Van dwellers, off-grid campers, and small-scale users wanting a semi-automatic dry-flush toilet
Not ideal for: Heavy users or large households who need high capacity and minimal recharge cycles
- Model Number:Loo Seal Series – Gray
- Dimensions:17″ x 16″ x 11″
- Battery Capacity:5200mAh
Our verdict“This is a strong choice for users wanting a semi-automatic, odor-free dry toilet with convenient operation, provided they accept ongoing consumable costs.”
How We Picked
Our evaluation focused on performance, user-friendliness, build quality, maintenance requirements, and overall value. We compared how well each model manages odor, ease of installation, and suitability for tiny home space constraints. Durability and user feedback also played key roles, along with portability features for those on the move. The ranking reflects a mix of affordability, reliability, and features that cater specifically to tiny home living, ensuring readers find options that balance practicality and cost.Factors to Consider When Choosing Composting Toilets For Tiny Homes
When selecting a composting toilet for a tiny home, it’s important to consider several factors that impact daily use, maintenance, and comfort. Tiny homes have limited space, so size and installation ease are critical. Additionally, odor control and composting efficiency can vary widely, affecting indoor air quality and cleanliness. Understanding these factors will help you choose a model that fits your lifestyle and budget, avoiding common pitfalls like overspending on features you won’t use or selecting a system that’s too complex for your comfort level.Size and Installation Ease
Given the compact nature of tiny homes, selecting a toilet that fits seamlessly into your available space is essential. Some models are portable and require minimal setup, ideal for those who want flexibility or rent their tiny home. Others may need permanent installation, which could involve plumbing or venting. Consider your willingness to perform installation tasks and how often you’ll need to move the toilet if your tiny home is on wheels.
Odor Control and Venting
Odor management is often the top concern in small living spaces. Toilets with effective venting systems and urine separation tend to perform better at minimizing smells. However, more sophisticated odor control features can add to the initial cost and maintenance complexity. Think about whether you prefer a simple, self-contained unit or a system with external venting, especially if you plan to keep the toilet indoors long-term.
Maintenance and Ease of Use
Frequent maintenance can become a burden, especially in tiny homes where space is limited. Some models require regular emptying of compost bins or tank cleaning, while others are designed for longer intervals between emptying. Choose a model that matches your willingness to perform upkeep; simpler systems may be better for beginners, but premium options often offer better odor control and longer-lasting performance.
Cost and Long-Term Value
While budget models are tempting, they may lack durability or become more expensive over time due to higher maintenance. Conversely, investing in a more durable, feature-rich toilet might save money long-term, especially if it reduces odors and cleaning effort. Consider your total budget, including initial purchase, installation, and ongoing maintenance, to find the best value for your specific needs.
Portability and Versatility
If your tiny home is mobile or used for camping, portability becomes a key factor. Lightweight, compact models are easier to transport and set up, but they may sacrifice some features like capacity or advanced odor control. Fixed models provide more permanence and often better integration with your living space, but at the cost of flexibility. Prioritize based on how often you’ll move the unit or use it in different locations.
Frequently Asked Questions
How often do I need to empty a composting toilet in a tiny home?
The frequency of emptying depends on the size of the unit and your usage, but most composting toilets require emptying every 1 to 3 months. Some models have larger capacity bins, reducing the need for frequent maintenance, which is ideal for busy households or those who prefer less upkeep. Regularly checking the compost bin and following manufacturer guidelines will ensure your toilet functions properly and odor remains controlled.
Are composting toilets suitable for indoor use in tiny homes?
Yes, many composting toilets are designed specifically for indoor use, with features like sealed compost chambers and odor control systems. Choosing a model with effective ventilation is key to maintaining indoor air quality. Some units are self-contained and compact enough to fit into tight spaces, making them excellent choices for tiny homes. Proper installation and ventilation will ensure your indoor environment stays fresh and odor-free.
What maintenance is involved with a urine-diverting composting toilet?
Urine-diverting models typically require less frequent cleaning of the composting chamber because urine is separated, reducing moisture and odor. The solid waste container usually needs to be emptied every few weeks, depending on usage. Regularly adding carbon-rich materials like sawdust can aid composting and help control odors. Following manufacturer instructions on maintenance will keep the system functioning smoothly and extend its lifespan.
Is a more expensive composting toilet worth the investment for a tiny home?
Higher-priced models often offer better durability, odor control, and user convenience, which can justify the initial investment. They tend to require less frequent maintenance and provide a more seamless experience, especially for those living full-time in a tiny home. However, if your use is occasional or you’re on a tight budget, a more affordable model may suffice, provided it meets your basic needs and is easy to maintain.
Can I install a composting toilet myself in a tiny home?
Many composting toilets are designed for DIY installation, especially portable or self-contained models. Basic plumbing and venting skills are helpful, but most manufacturers provide clear instructions. For permanent fixtures or complex venting systems, consulting a professional may be advisable to ensure proper setup. Proper installation is vital to prevent odors, leaks, and other issues, so assess your comfort level before attempting installation yourself.
Conclusion
For those seeking a reliable, all-around solution, the Sun-Mar GTG emerges as the best overall pick due to its balance of performance, ease of maintenance, and space efficiency. Budget-conscious buyers or occasional users might find the Kohree Portable RV Toilet a practical choice, offering decent functionality at a lower price. For tiny home dwellers prioritizing portability, the TROBOLO WandaGO Lite provides a lightweight, easy-to-move option. Beginners or those new to composting toilets should consider models with straightforward setup and minimal maintenance, while experienced users might prefer premium systems with superior odor control and durability. Your choice ultimately depends on your specific living situation, mobility needs, and comfort with maintenance tasks.
Halloween Picks
halloween
As an affiliate, we earn on qualifying purchases.
