15 Best Composting Toilets For RV, Campers & Off-Grid Cabins

Looking for the best composting toilet? The honest answer is that the best composting toilet depends on how you plan to use it. However, there are a few standout options that consistently outperform the rest.

After using composting toilets full-time for years, I’ve tested what works (and what absolutely doesn’t) in campervans, RVs, and off-grid cabins. The best composting toilet for RVs and campervans is not the same as the best option for cabins or long-term off-grid living.

In this guide, I’ll break down the best composting toilets available today, compare 15 popular models, and explain exactly which one makes sense for your setup, budget, and usage style.

I’ve updated this guide for 2026 with current pricing tiers and a few newer composting toilet options. Keep reading so you don’t waste money or deal with preventable issues like odor, leaks, or bugs.

In this article:

• Comparison of 15 best composting toilet options in 2026
• Composting toilet reviews and best use case
• How to choose the best composting toilet for your needs
• Discount codes

Disclaimer: This article features some affiliate links. I only endorse things I’ve personally used or that come highly recommended by trusted peers. If you purchase anything I mention using my referral links from Amazon, REI or other retailers I may receive a small commission. However, there is never extra cost to you. You can read more here. Thank you for your support.

The Best Composting Toilets Compared (2026)

Use this chart for a quick comparison of the best composting toilets reviewed in this article. More detail on each toilet is provided below.

1. Capacity

Capacity determines how often you’ll need to empty the liquids jug and deal with the solids bin. Bigger tanks mean fewer dump trips, but they’re also more expensive and take up more space in your camper.

• Liquid capacity: Most models range from 1.2 to 2.6 gallons. A good rule of thumb is about 0.5 gallons per person, per day.
• Solids capacity: Most models range from 1.3 to 6.5 gallons. Solids capacity matters most if you’ll be off-grid for a week+ or have multiple users.

2. Agitator Vs Layering

There are two main styles of urine-diverting composting toilets:

• Agitator toilets have a crank/handle that mixes solids with compost material inside the bin. This helps break things down and is best if you’re trying to go longer between emptying. The downside is that you typically can’t use a liner, so dumping and cleanup are more involved.
• Layering toilets let you line the solids bin with a bag and add a scoop of compost material after each use. This is the easiest style for most RV and campervan setups because it keeps maintenance simple and helps control odor by absorbing moisture.

If you’re not planning to disappear off-grid for weeks at a time, I generally recommend a layering composting toilet. It’s less messy, faster to reset, typically less expensive, and easier to live with day-to-day.

3. Portable Composting Toilets

For most campers, boaters, and part-time travelers, a portable composting toilet is the most practical option. Fixed-install composting toilets can take up a lot of space and don’t offer much flexibility.

Portable composting toilets are easier to carry out for dumping, easier to move when you’re winterizing, and simpler to store out of sight when you’re not using them.

1. Cuddy Lite (Best Composting Toilet for RVs & Campervans)

If you’re looking for the best composting toilet for RVs or campervans, Cuddy Lite is my top recommendation.

It’s the perfect mix of price, capacity, and ease of maintenance.

The layering system means no agitator, and no complicated clean-out process. You line the solids bin with a plastic bag, add compost material after each use, and toss the bag when it’s full.

Odor control is excellent when used correctly, especially if you add the optional battery-powered vent fan.

Cuddy products have a built-in modesty cover which also keeps smells contained and prevents bugs (a big problem in summer for other budget composting toilets).

Perhaps my favorite feature of the Cuddy Lite is its ability to be upgraded to the Cuddy Original (with agitator) or Cuddy S1 Dry Flush Toilet (self sealing bags) by swapping the internal parts.

2. Boxio (Best Budget Composting Toilet For Part-Time Travelers)

If your top priority is price, Boxio is the best budget composting toilet on the market.

It’s extremely portable, easy to store, and costs significantly less than most competitors. For occasional use (weekend trips, festivals, or short road trips) it gets the job done without a huge upfront investment.

That said, this is very much an entry-level composting toilet option. The smaller liquid and solids capacity means more frequent emptying, and the lack of venting or a modesty cover makes odor control more dependent on good compost material and consistent maintenance.

3. Trobolo WandaGo (Best Portable Composting Toilet For Camping)

The Trobolo WandaGo is a solid middle ground between ultra-cheap and high-end portable composting toilets.

It’s lightweight, easy to move in and out of your camper, and includes small quality-of-life features like a urine level window that make daily use less annoying.

Like other portable composting toilets in this price range, there’s no venting or modesty cover, so it’s best if you’ll be camping in moderate climates and regularly emptying it.

One particularly interesting feature I like about the Trobolo WandaGo is it’s integrated height adjustment. It’s easy to stack at your campsite for a “normal” toilet height.

→ Check out my Trobolo WandaGo review for more detail

4. Nomad By OGO (Best Budget Composting Toilet For Extended Trips)

If you want a budget composting toilet with more solids capacity, the Nomad by OGO stands out.

Unlike most portable composting toilets in this price range, it offers a surprisingly large solids capacity, making it a better option for longer intervals between dump trips. It’s made in the USA and keeps things simple—no power, no venting, no complicated installs.

One feature I’m not sold on is the lack of a rigid solids bin in the Nomad by OGO. Instead, bags clip directly into the base. This keeps weight down but does make disposal slightly less tidy than bin-based designs.

5. Trelino (Best Composting Toilet for Small Spaces)

If space is tight, Trelino is one of the best composting toilets you can fit into a small van, boat, or compact camper build. It’s one of the few portable composting toilets offered in multiple sizes and configurations, which makes it easier to fit into tight layouts.

It’s lightweight, completely power-free, and very straightforward to maintain. It uses a layering system (no agitator), which makes disposal easy and keeps ongoing maintenance low.

Replacement parts are readily available, and the build quality feels solid for the price.

The tradeoff is that there’s no venting and no modesty cover, so it’s better suited for cooler climates, weekend trips, or setups where you can empty solids more frequently.

NOTE: Trelino is also available on Amazon, but prices tend to be higher and discount codes will not work.

If none of these feel like the right fit, agitator-style composting toilets may make more sense, especially for extended off-grid use.

6. Cuddy Original (Best Agitator Composting Toilet for RVs & Campervans)

The Cuddy self-contained composting toilet is the agitator-style alternative to the Cuddy Lite and is a strong option if you want longer intervals between dumping while still keeping maintenance manageable.

Unlike layering toilets, Cuddy Original uses an internal agitator to mix solids with compost material, which helps them break down more efficiently over time.

This makes it a better fit for longer trips or situations where you won’t have easy access to trash or dump points.

Cuddy does an excellent job addressing common agitator complaints. The agitator handle is positioned on the front of the toilet for easier access in tight spaces, and the modesty cover actively diverts liquids into the urine container to keep solids drier and reduce odor.

Another feature that sets the Cuddy apart are special hinges which allow a flush wall mount to maximize space while maintaining full range of motion on the toilet lid.

Finally, CompoCloset (the makers of Cuddy) offer a generous 30 day return and 2 year warranty with their products.

7. Cuddy S1 (Best Dry Flush Toilet for Single Users)

The Cuddy S1 is not a traditional composting toilet—it’s a dry flush toilet. But more importantly, it’s a urine-diverting dry flush toilet (which really sets it apart).

The S1 uses a cartridge-based system that seals waste in odor-proof bags after every use. It’s a great Laveo dry flush toilet alternative that doesn’t rely on chemicals. There’s also no compost material needed and no exposure to waste during disposal.

Most dry flush toilets seal solids and liquids together… which means every time you go (even if it’s just liquid), you have to use up a “flush”. That can get expensive really fast (like $1-$3 per flush).

Additionally, if liquids and solids are funneled together into the waste bag, like with Laveo, you’ll also need weird chemicals that clump the liquid like kitty liter which is an added expense, kinda gross, and definitely not eco-friendly.

Cuddy S1 doesn’t have any of those issues. Instead, liquids are diverted into a separate holding tank. The liquids tank is easy to dump. By diverting urine, this dry flush toilet will save you hundreds in cartridge replacements over its lifetime.

8. Modiwell (Best Composting Toilet for Occasional Use)

The Modiwell composting toilet is included in this guide for the sake of completeness, but it’s not a composting toilet I recommend for most people.

The biggest issue is the leg design. Modiwell uses thin metal legs that flex easily and feel unstable, especially with regular use. Over time, this can lead to bending or wobbling—something you don’t want in a toilet.

For the price, there are significantly better layering composting toilets available with stronger materials, better engineering, and easier maintenance.

9. Joolca GottaGo (Best Modular Composting Toilet for Campers)

The Joolca GottaGo is a modular, portable composting toilet designed with campers and overlanders in mind.

What sets it apart is its modular system. The same toilet can be used as a portable composting toilet, or as a cassette chemical toilet. You’ll just need to swap the bin type.

NOTE: Only one bin is included in the cost. Additional bins are +$90.

Maintenance is straightforward thanks to the layering system and removable solids bin, but like other portable options, there’s no venting or modesty cover. That means odor control relies heavily on compost material and frequent emptying.

One large drawback to this composting toilet is the very small drop zone. Especially compared to Cuddy toilets, the clearance for solids is extremely narrow which can mean more unpleasant cleanup.

10. Nature’s Head (Best Composting Toilet for RV Extended Off-Grid Use)

If you’re planning to be off-grid for extended periods, Nature’s Head is one of the most proven and widely used composting toilets available.

Its standout feature is capacity. With one of the largest solids bins on the market, it allows multiple users to go significantly longer between emptying compared to layering or smaller agitator toilets.

Nature’s Head is externally vented and does an excellent job with odor control when installed correctly.

The tradeoff is cleanup. Emptying and cleaning the solids bin (with an agitator arm) is more involved than tossing a liner, which is why it’s better suited for users who prioritize capacity over convenience.

11. Airhead (Best Customizable Off-Grid Composting Toilet)

The Airhead composting toilet is often compared directly to Nature’s Head, but it shines in a slightly different way: customization.

Airhead allows more flexibility in how the toilet is configured, including venting direction, handle placement and seat height, which makes it easier to fit into non-standard layouts.

It also uses an agitator system and is externally vented, so odor control is solid when installed properly.

I used an Airhead in my campervan for years and never had any odor issues. More detail is included in my Airhead composting toilet review.

TIP: I bought my Airhead years before there were other great composting toilet options. It’s a great toilet and I have no complaints, but for my next camper I would consider the Cuddy Lite (similar features, less expensive) or Cuddy S1 sealing toilet (similar price, better features) instead.

The downside is messy maintenance. Like most agitator-style toilets, emptying and cleaning the solids bin is more hands-on than liner-based systems. It’s also on the pricier side (around $1,100).

12. Separett Tiny (Best Composting Toilet For Cabins)

The Separett Tiny is designed primarily for cabins and permanent installations, not mobile builds.

It uses an electric vent fan and a separation system that keeps liquids and solids completely isolated. Solids drop into a lined container, while liquids are diverted to a separate tank or drain.

The automatic trap door closes after each use, which significantly reduces odor and keeps insects out.

Because it requires power and ventilation, Separett Tiny isn’t an ideal composting toilet for RV campers, vans or camping setups. Where it excels is reliability and low odor in fixed locations.

NOTE: Separett Weekend Prime was recently released. It’s a similar composting toilet without the electrical hookup requirement … for approximately half the cost.

13. OGO (Best Automated Composting Toilet For RV Campers)

The OGO composting toilet is unique because it features an automatic agitator, rather than a manual crank.

At the push of a button, the agitator mixes solids inside the bin, which reduces hands-on interaction and makes daily use feel more “hands off” compared to traditional agitator toilets.

It’s externally vented and includes a liquid full indicator, both of which help with odor control and maintenance.

The tradeoff is complexity. Automatic components mean more parts that could eventually need servicing.

It’s also expensive for the amount of solids capacity you get. However, at 15 inches wide it’s one of the narrowest composting toilets, making it ideal for tight spaces.

14. BioLet Mini (Best Composting Toilet For Tiny Homes)

The BioLet Mini is a fully self-contained composting toilet designed for users who want a porcelain-look for a traditional bathroom esthetic.

However, compared to other composting toilets in this price range you’ll sacrifice features in exchange for the modern style of BioLet Mini.

One major concern with this composting toilet is the urine diverter in the toilet bowl. Unless you have near perfect aim, liquids are likely to spill into the solids bin which can cause foul sewage odors and a mess to clean up.

For nearly half the cost, Cuddy Original provides all of the same features (minus the porcelain-look) with a better urine diverting design.

15. BioLet (Best Composting Toilet For Home Use)

The full-size BioLet composting toilets are designed for residential and commercial use, not travel or camping.

These systems are large, expensive, and highly automated. They use electric agitation, ventilation, and internal heating elements to actively dry and break down waste continuously, significantly reducing odor and volume.

Compared to non-electric toilets, BioLet systems require far less frequent emptying, especially for solids.

Because of their size, cost, and power requirements, BioLet composting toilets only make sense in permanent installations where convenience outweighs budget considerations. This is not a portable composting toilet, and it’s not suited for vans or RVs.

How Does A Composting Toilet Work

Understanding how composting toilets work makes it much easier to choose the best composting toilet for your setup—and avoid rookie mistakes that lead to odor, mess, or unrealistic expectations.

Liquid and Solid Separation

Composting toilets work by separating liquids from solids. A specially designed toilet bowl directs urine and solids into two different containers, which is the key to odor control and easier maintenance.

Unlike traditional flush toilets, composting toilets:

• Don’t use water
• Aren’t connected to plumbing or a septic system
• Don’t “flush” waste away

Keeping liquids and solids separate allows solids to dry out and begin breaking down, which significantly reduces smell.

What Happens to Liquids

Liquids are collected in a removable container and need to be dumped regularly. In practice, this is usually the most frequent maintenance task.

Most people dump liquids:

• Into a pit toilet at a trailhead
• In a public restroom or truck stop
• In approved dump locations, depending on local regulations

Always check local rules, as disposal guidelines can vary by county or land manager.

What Happens to Solids

Solids are mixed with compost material (like coco coir) and stored in a separate bin. While these toilets are called “composting toilets,” it’s important to understand that the contents are not fully composted when you empty them.

True composting of human waste takes 6+ months under controlled conditions. What you remove from a composting toilet should be treated as solid waste, placed in a sealed bag, and disposed of properly. Use gloves and basic hygiene precautions, as there is a potential biohazard risk.

Can You Put Toilet Paper in a Composting Toilet?

Yes—if you want to.

Many people (myself included) put septic-safe toilet paper directly into the solids bin, where it breaks down along with the waste. This works well with layering systems and good compost material.

Others prefer to keep used toilet paper in a separate trash container. Both methods work, it just comes down to personal comfort and maintenance preferences.

Final Verdict: The Best Composting Toilet Overall

After testing many composting toilets in real-world campervans, RVs, and off-grid setups, one thing stands out:

If I had to choose just one composting toilet that works well for the most people in the most situations, Cuddy Lite is the one I’d recommend.

Why I recommend Cuddy Lite:

• Best value for price: It’s the perfect balance between price, capacity, and ease of maintenance.
• Simple to live with on the road: The layering system and removable solids bin make it odor-free with easy clean-up.
• No power needed: There’s no complicated installation process, just unbox it and go. That means fewer parts to fail and more flexibility and portability.

For most campers, weekend warriors, and seasonal travelers, Cuddy Lite delivers the best mix of practical everyday use + comfort + value which is exactly why I think it’s the best composting toilet.

Who Cuddy Lite is best for

• RVers and campervan owners who want a reliable everyday composting toilet
• Campers who want easy installation and low maintenance
• People who want good odor control with minimal fuss
• Users who empty solids semi-regularly instead of long off-grid stays

When to consider something else

Cuddy Lite isn’t perfect for every scenario. If you plan to:

• Spend weeks off-grid at a time, a higher-capacity agitator toilet (like Nature’s Head) might make sense
• Install in a permanent cabin with power and venting available, an electric or vented toilet (like Separett or BioLet Mini) could be a better fit
• Want zero exposure to waste, a dry flush option like Cuddy S1 is worth a look

But for most van lifers, RVers, and campers looking for a composting toilet that’s easy to install, easy to live with, and easy to maintain—Cuddy Lite should be your first choice.

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