I still remember the first time I asked myself, “What is the best composting toilet on the market?” It wasn’t in a store. It was inside a crowded RV on a hot day. I was wondering if a small portable toilet could really handle the job.
Since then, I’ve tried composting toilets in cabins, tiny houses, and even off-grid camps. I’ve seen what works and what doesn’t.
In this guide, I’ll share my composting toilet reviews. From the trusted Nature’s Head to newer portable models, you’ll see what fits best for your home, RV, or cabin.
What Is the Best Composting Toilet on the Market?
The Nature’s Head Composting Toilet is the best all-around choice in the USA. I first tried one at a cabin. I was unsure at first. But it worked perfectly. No bad smells. Easy to use. Very sturdy. It handles RVs, cabins, and tiny houses with ease.
If you have special needs, there are good alternatives. For a quiet cabin toilet, try the Separett Villa 9215. Tiny house? The BioLet Composting Toilet is compact and comfy. Need a portable option? Look at Cuddy Lite, Boxio, or Trobolo WandaGO Lite. You can move them easily.
Nature’s Head stands out for three reasons: it is strong, keeps odors down, and is simple to maintain. You don’t need tools or tricks. It just works. If you want reliability for an RV, cabin, or tiny house, this is the one. For other needs, the alternatives I listed can fit your setup perfectly.
How Does a Composting Toilet Work?
A composting toilet does not use water to flush. Solids and liquids go into separate containers. Liquids drain away. Solids stay and break down. This keeps smells low and composting fast.
Some toilets use a hand crank or spin system to mix the solids. Others work on their own with air and time. Adding sawdust or a natural cover helps control moisture and odor.
Most composting toilets have a small vent fan. It pulls air through a filter. This keeps the room smelling fresh. In my experience, following the simple steps keeps odors nearly gone.
Composting toilets save water. They are great for cabins, tiny houses, or off-grid living. They create compost that can improve soil (check local rules first). They take a small learning curve but are easy to use once you get used to them.
Best Composting Toilets: Reviews & Recommendations
Picking the right composting toilet can feel hard. I have tried many in cabins, RVs, and tiny houses. Some work well. Others are tricky. Here’s my list of the best ones in the USA.
Best Overall – Nature’s Head Composting Toilet
This is my top pick. It is strong and easy to use. The fan keeps smells away. The hand-crank mixes solids well. I used it in an RV and in a cabin. Both times it worked perfectly. It costs more, but it lasts a long time.
Best for Home Use – Sun-Mar Excel Composting Toilet
If you want a home setup, this is great. It is quiet and roomy. It can handle more use without emptying often. I put one in a small cabin. It felt like a regular toilet. The electric version speeds up composting.
Best Non-Electric – Trelino Evo Composting Toilet
No power? No problem. The Trelino Evo works without electricity. Solids and liquids separate easily. It stays odor-free. I tried it in a tiny cabin. It was simple and reliable.
Best Portable – Cuddy Lite, Boxio, Trobolo WandaGO Lite
Portable toilets are good for travel and short-term use. I used the Cuddy Lite on a weekend RV trip. The Boxio and WandaGO Lite are also solid. They are light, easy to clean, and control odor if used correctly.
Best for RVs – Nature’s Head Composting Toilet (RV setup)
RVs need a toilet that handles movement. Nature’s Head does that. It fits well, stays clean, and keeps odors down. I have used mine for over a year. It is still easy to maintain.
Best for Off-Grid Cabin – Separett Villa 9215
This one is quiet and efficient. The fan works well. The seat is comfortable. Perfect if your cabin has no plumbing or electricity.
Best for Tiny House – BioLet Composting Toilet
BioLet is small and discreet. It is quiet and easy to maintain. I tested it in a tiny house. It felt roomy despite the small footprint.
Best Budget-Friendly – The Humanure Handbook (DIY method)
If you want to save money, try this DIY method. You use bins, sawdust, and composting techniques. It takes effort, but it costs very little. I tried it for a few weeks. It works if you manage moisture and cover material well.
Nature’s Head works for most setups. But smaller, portable, or non-electric models fit other needs. Once you pick one, switching is easier than you think. You will save water, reduce waste, and maybe enjoy it more than you expect.
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Quick Guide Comparison: Best Composting Toilets
Choosing a composting toilet can feel confusing. You want comfort, ease, and no smell. From my RV and cabin experience, a few models work really well. Here’s a quick guide to compare comfort, portability, power, odor control, and price.
| Product | Comfort | Portability | Power | Odor Control | Price Range |
| Cuddy Lite Layering Toilet | Comfortable seat | Very easy to move | Non-electric | Good with sawdust | $100–$150 |
| Trelino Evo | Ergonomic, comfy | Lightweight | Non-electric | Excellent odor control | $300–$400 |
| Boxio Portable Toilet | Basic but okay | Very portable | Non-electric | Needs attention | $120–$180 |
| Trobolo WandaGO Lite | Simple seat | Super travel-friendly | Non-electric | Works well for short trips | $150–$200 |
Here is what I learned:
- Comfort is more than soft seats. You need a seat that feels good long-term. I used the Trelino Evo for a week. It is very comfortable.
- Portability matters if you move your toilet a lot. The Cuddy Lite and Trobolo WandaGO Lite are light and easy to carry.
- Power is usually not needed. All these models are non-electric. Trelino Evo uses a smart system to keep things clean.
- Odor control is very important. A smelly toilet ruins off-grid fun. Sawdust in the Cuddy Lite or liquid separation in the Trelino Evo works well.
- Price can vary. On a budget, Cuddy Lite or Boxio are good. For comfort and easy use, Trelino Evo is worth the money.
In short, Trelino Evo is best for cabins or tiny houses. For travel, Cuddy Lite or Trobolo WandaGO Lite shine. New to composting toilets? Boxio is cheap and easy.
Key Features to Consider When Buying a Composting Toilet
Comfort
A composting toilet should feel like a normal toilet. If the seat is too small or low, it gets annoying fast. I learned this during my first cabin stay. The best pick is one with a seat close to standard height, so the switch feels natural.
Cleaning & Maintenance
Emptying the bin is part of the deal. Some toilets need it every few days, while others last weeks. In my RV, a simple bin system made the job easy. The best choice is one with a low-mess emptying setup, so you don’t dread the task.
Construction & Durability
Cheap plastic breaks fast. I’ve seen hinges snap and seats crack. Strong ABS plastic and marine-grade parts hold up in RVs or cabins. A composting toilet built with solid materials will last for years without quick fixes.
Portability vs. Permanent Setup
Some composting toilets move with you, while others are built to stay put. For camping, I like a light, portable unit. In my tiny house, I needed a fixed model with venting. The right option depends on your lifestyle—portable for travel, permanent for cabins or homes.
Odor Control
A good composting toilet should not smell. Separation of liquids and solids plus a small fan keeps it fresh. I’ve had guests in my RV who didn’t even realize there was a composting toilet inside. Look for models with both separation and ventilation to control odor.
Rotation Systems
Mixing waste speeds up composting and keeps things dry. Hand-crank models do this best. I prefer them because they smell less and break down faster. A crank system makes the process easier than letting it sit.
Common Problems With Composting Toilets (And How to Fix Them)
Urine Smells
Urine smell is the top issue for new users. I had this in my RV when I left the liquid tank too long. The fix is easy: empty the tank often, rinse with vinegar, and keep the fan on. Toilets that split liquids and solids smell much better.
Excess Moisture
Too much water makes a wet mess. I saw this in my cabin during spring rains. Add dry cover like sawdust or coco coir, and check the vent for blockages. Stirring with a crank keeps the mix dry.
Cold-Weather Issues
Cold slows down composting. In my mountain cabin, the process almost stopped in winter. Keeping the toilet inside and above freezing fixed it. Some people add pipe wrap or a small heater to help airflow and warmth.
Learning Curve
The first time I used one, I worried about every step. What to add, when to empty, how to stir—it felt like a lot. In truth, it’s simple: keep solids dry, dump liquids often, and stir if you can. After a few tries, it feels natural.
FAQs – Composting Toilet Questions Answered
What is the best composting toilet on the market for the USA?
The best composting toilet in the USA is the Nature’s Head Composting Toilet. It stands out because it lasts a long time, controls odor well, and is simple to use. I’ve used one in an RV and in a cabin, and it always felt reliable.
What is the best composting toilet for RVs?
For RVs, the Nature’s Head is the top choice. It handles bumps on the road, doesn’t spill, and stays fresh with good airflow. When I traveled cross-country, it made life easier because I didn’t need dump stations as often.
What is the best composting toilet for cabins?
The best composting toilet for a cabin is the Separett Villa 9215. It works well in off-grid setups and handles long stays without trouble. A friend used one through a snowy winter in a mountain cabin, and it held up great.
What is the best composting toilet for home use?
For home use, the Sun-Mar Excel is the best pick. It’s larger, electric, and made for steady use. If you want something close to a “normal” toilet, this one feels the most like home.
What is the best composting toilet for a tiny house?
In a tiny house, the BioLet Composting Toilet works best. It’s compact, easy to clean, and fits small spaces. I visited a tiny home couple who loved how it blended right in with their layout.
What is the best portable composting toilet?
For travel or camping, the Cuddy Lite or Trobolo WandaGO Lite are top choices. They’re light, simple to carry, and set up fast. I’ve taken one on a weekend trip, and it felt way better than using a bucket system.
What is the best compost for a toilet?
The best compost for a toilet is a mix of peat moss or coco coir. Both help absorb moisture and keep smell down. I’ve used coco coir, and it worked better in humid weather.
What is the best biodegradable toilet?
A good biodegradable toilet is the Trelino Evo. It doesn’t need power, is light, and breaks down waste naturally. Perfect if you want something simple and eco-friendly.
How do you stop urine smell in a composting toilet?
You stop urine smell by keeping liquids and solids apart and using good ventilation. Adding a bit of vinegar to the liquid tank also helps. I learned that trick after a long summer trip—it works fast.
What are common problems with composting toilets?
The most common problems are extra moisture, clogs, and smell. These are easy to fix with the right compost mix, better airflow, and regular cleaning. At first, I struggled with damp compost, but peat moss solved it.
Are composting toilets legal in the USA?
Yes, composting toilets are legal in most states. Rules change by city, so check local codes before installing. In my case, the county allowed it for off-grid cabins without issue.
Are composting toilets worth it?
Yes, composting toilets are worth it if you want less water use and more freedom. They save money on plumbing and give peace of mind when living off-grid. I was nervous before switching, but now I wouldn’t go back.
Final Thoughts: The Best Composting Toilet for You
For most people in the USA, the Nature’s Head Composting Toilet is the best pick. It is tough, easy to use, and keeps smells under control. If you want one toilet that works in many places—RV, cabin, or home—this is it.
That said, no single toilet fits every lifestyle. If you live in a tiny house, you may want a smaller unit. For cabins, a model like the Separett Villa might work better. If you move a lot, a light portable toilet is the smarter choice. The best composting toilet depends on where and how you live.
When I first made the switch, I was nervous. I thought it would be messy or hard to manage. But it was easier than I ever expected. Once I got used to it, I realized how much freedom it gave me—less water use, no black tank stress, and a big step toward living green.
In the end, the right composting toilet is the one that makes your life simpler. For me, the Nature’s Head proved to be that choice. It worked in my RV, and later in a small cabin. If you want a setup that lasts and saves you stress, it’s hard to beat.
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