Best Composting Toilet

Everyone is aware of the enormous benefits that come from composting plants. The people with a garden are looking for ways to acquire compost without spending too much effort and money. 

It takes a ton of effort to make compost on your own, and the whole operation can be expensive. However, there is an efficient way that can be a win-win situation. Purchase a composting toilet! 

These excellent toilets can be great for rural homes, cabins, camps, cottages, boats, and RVs. They are super easy to set up and only require several tools. On top of that, the toilets don’t use any water and are a great option if you are concerned about the environment. 

By reading these couple of sentences, you may feel overwhelmed and start asking yourself, What am I getting myself into? Do I really need a composting toilet? Where should I buy one? 

Don’t worry; we can help. We scoured the internet and went through all the self-contained toilets that the market offers, electric and non-electric, small, medium, and large, together with their pros and cons, so you don’t have to. 

Our article will provide every information so you can make an informative decision and buy the best composting toilet. 

Best Composting Toilet

How Did We Make Our List?

Before jumping on to our choices for the best composting toilet, we like to explain the thought process behind our research and highlight some of the things we paid close attention to. While scouring the internet for composting toilets, we considered various factors before making our selections.

Since one of the crucial factors is capacity, we only choose toilets capable of handling multiple adults. In addition, we didn’t limit our choices on weight, and every composting toilet we are going to review can hold individuals that weigh more than 300 pounds. The material plays a huge role in this, and even though some toilets are made from plastic, their interior is very stable. 

Odor control is another essential feature that we paid close attention to. The odor removal is crucial for every adequate composting toilet. The models we selected are very well crafted and have a modern design that uses top-notch ventilation systems. 

The fans will prevent any odor from spreading around in the toilet area. Since composting toilets are made for a tiny home, we choose compact models that fit in a small space.

Best Composting Toilets

The composting toilets can be a perfect addition to your tiny house or mobile home. They can be a great alternative to the traditional flushing commode. These newly invented toilets can break down the aerobic bacteria from the human waste and stow it in a neat package that can be easily removed. 

The toilets can break down the organic materials from the debris and separate the liquids from solids. While there is an option to dispose of the waste in a regular trash bag, you can also use it in your garden. However, many manufacturers started creating such toilets, and some are better than others. We selected four of the best composting toilets on the market, and they are:

Best Composting Toilet Review

OGO Waterless

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First on our list is the OGO composting toilet. This USA-made toilet has a modern design and can be very easy on the eyes. The OGO toilet comes with an electric agitator, a liquid level light, and a trap door mechanism. The company that manufactures this toilet separates from its competitors by having an electric solids agitator that effectively mixes the waste. 

It does so with the push of one button. The trap door mechanism is engineered by professionals with a lot of experience and can separate the urine dam. 

This ensures that all the urine flows into the water, no matter how you use it. The OGO composting toilet has a modern design requiring only a tiny space. It is white and 15x16x18.38 inches. The toilet is straightforward to clean and comes with venting options meaning there will be no unpleasant odor after the composting process. 

The OGO composting toilet is made from solid density polypropylene and weighs about 28 pounds. It is convenient and can be the perfect addition to your tiny home. As far as the exterior of the toilet, it is made from polypropylene calcium fill. 


The toilet consists of 95 durable parts and is made to last a long time. 

This composting toilet is designed to separate solid and liquid waste effortlessly without leaving an unpleasant smell. It is very small, energy-efficient, and waterless. The OGO composting toilet is one of a kind.

You get the composting toilet, mounting screws, vent hose, 12V power cable, and a spray bottle by purchasing the OGO box. The motor of the composting toilet runs 2-minute cycles, and the solid bin has a capacity of 25 to 30 users. The bottle for urine can hold up to 2.4 gallons of any liquid. 

The 12V power supply that comes in the packaging needs to be connected to a power jack on one side and the back of the toilet on the other side. The wire with the gray stripe is positive, and the other is negative. The company that produces the toilet also offers a 110V power supply which can be bought separately. The toilet fan is always on and has a 20 mA rating. 

The venting power inserts can be swapped together with the inlet filter. This depends on the direction of your power source. The swapping process is simple: just pop out the insert from the toilet and pop them back on your chosen side. 

  • High-quality
  • USA-made
  • Modern design
  • Small and convenient size
  • Waterless
  • Comes with an electric agitator and trap door mechanism
  • 12V power supply
  • Urine level indicator light
  • Made from polypropylene
  • Long-lasting
  • The plastic parts have 5 years of warranty
  • The electrical components have 1 year of warranty
  • Positive reviews
  • Great customer service
  • Free shipping 
  • Some customers have experienced shipping delays 
  • The installation process can be a little tricky

Nature’s Head Spider Handle 

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Next on our list is Nature’s Head self-contained toilet. This toilet is also made in the United States and has a spider-handled design. The self-contained toilet from Nature’s head is made from plastic and has stainless steel hardware. In addition to that, it has a fan built-in that is powered by 12V. 

The agitator of the toilet can successfully mix materials, and a spider handle operates it. The handle can save you space, and it is a great option; however, you can purchase the toilet with a standard crank handle. The choice is up to you. The bulking material consists of peat moss and coco coir, and the toilet uses substrate to process waste. 

The outstanding feature of this composting toilet is that it leaves no smell and can be ideal for a boat or an RV. The customers who bought this toilet stated that the liquids need to be emptied every few days, but the solid waste can go for more than 5 months. The company estimates that the trash should be emptied after 60 to 80 uses. 


The brand created the composting toilet in 2006, and since then, customers have shown nothing but praise and satisfaction. Nature’s Head is a reliable company that has been manufacturing products for quite a while. 

From the start, the company has supported charitable organizations like Unchained Movement, which fights sex trafficking, and Warrior Homesteads, an organization that offers a helping hand to homeless veterans. 

Nature’s Head composting toilet can be easily installed. It can be done by any handy individual and doesn’t require professional help. The composting toilet has dimensions of 20,98×19,02×20,98 and is made from plastic. The color is granite and comes in a rectangular shape. 

Nature’s Head self-contained toilet weighs 28 pounds and requires only a tiny footprint. The customer service of Nature’s Head is extraordinary and provides support for every individual that purchases the toilet. 

The composting toilet from this company has excellent reviews from customers and nothing but 5-star ratings. It leaves no odor and comes with a 5-year warranty. The storage tank has a huge capacity, and if two people use the toilet regularly, it needs to be emptied even after a month. 

  • Highly rated
  • Reputable company 
  • The company supports charitable organizations 
  • 5-year warranty
  • 12V power supply 
  • Spider handle
  • Large tank capacity
  • Easy installation
  • Leaves no odor
  • Doesn’t require maintenance
  • Great customer support
  • Maximum weight capacity 300 pounds
  • The exterior is plastic, which can make some people question the durability of the toilet
  • The urine bottle needs to be emptied every few days

Separate Villa 9215

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Continuing our list, Separate Villa is the oldest composting toilet on our list. It was made in 1975 in Sweden by a company called Treehugger. The company was created by an individual named Graham Hill, who struggled with compost and had a tiny home. He still, to this day, has the Separate Villa in his home in Maui. 

This self-contained toilet separates solid waste and urine to reduce the volume and smell that must be handled. After sitting down on the toilet, the screen immediately converts the container with solid waste and rotates it simultaneously. 

This allows the contents to be evenly distributed. Unfortunately, the regular package of Separate Villa doesn’t come with a child seat; however, the company offers a child seat that can be bought separately and attached to the toilet, so your little ones are also contributing to the soil in your garden. 

The Separate Villa 9215 toilet has a fan that connects with AC/DC adaptors. To simplify the whole cleaning of the toilet operation, you can use the biodegradable bag set in the container. The toilet looks and acts just like a regular toilet, and there is no need to add bulking materials. 


The Swedish company that created the composting toilet supports various projects that offer better sanitation to people from Peru and China. 

The Separate Villa comes in a smaller size than the regular composting toilets. The installation process is quick and easy, and everything you need to know is included in the packaging. The Villa composting toilet can be set up to run on electricity or battery power. This feature makes the Separate Villa ideal for your cabin in the woods. 

This Swedish waterless toilet also has an electric fan that helps exchange gasses. It operates 110V in a house or on a 12V system if you are in a motorhome or boat. It weighs around 34 pounds, and it is lightweight. The capacity of the tank is large enough for an average-size family to use it for about three weeks. 

This waterless and urine-diverting toilet operates with AC in a standard household or DC from a battery or solar when you are off the grid. Both adaptors for AC and DC support venting of up to 20 feet. 

  • Smaller size
  • Top-quality
  • Compact and lightweight
  • Comes with all the necessary accessories
  • Long warranty
  • Battery adapter
  • AC and DC usage
  • Ventilation fan
  • Waterless
  • Concealing view screen
  • Large tank capacity
  • The waste capacity is 6 gallons
  • Includes 110V and 12V adapters
  • Little pricey
  • Must mount to a wall

Poo Pod Waterless  

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Last but not least, The Poo Pod is a waterless and portable composting toilet that doesn’t require any water supply. In addition to that, this toilet also doesn’t need to be connected to a sewer system. 

The Poo Pod composting toilet has a unique and modern design. We choose this toilet as our last choice because it separates from its competitors by including several enhancements that cannot be found in other composting toilets. 

The Poo Pod comes with an automatic liquid drain system that allows the users to remove the holding tank without any hassle or concern. The peat spreading system offers excellent coverage and controls the amount of peat moss used. 

This waterless toilet for composting is made from high-quality plastic by molding injection. The Poo Pod can hold a person that weighs up to 330 pounds. The design is small in size and only requires a couple of handy tools for installment. The installation process is easy, and a hole saw can do the trick. 

The holding tank of this composting toilet contains three carry handles that allow easy emptying. The Poo Pod dry and portable composting toilet is easy to manage and can be placed in small homes or detached premises. 


The unique system of Poo Pod uses a holding tank for the pet moss to cover the waste and successfully drain the urine back of the toilet and into the ground. This eliminates the chance of overflowing, and you can sleep more peacefully. When the composting toilet is filled up, you can see it and easily empty the holding tank. 

As we mentioned, there is no need for water hookups for the Poo Pod because it doesn’t use water. The composting toilet sits on the floor and doesn’t require any waste outlet. If you like, you can move it. 

The toilet only needs an electrical 12V DC connection to work efficiently. The electricity is only available if you want to use the fan. The small fan will also require you to drill through a wall for a small ventilation duct. 

This composting toilet has a length of 27.75 height of 23, and a width of 15 inches. The exterior is made from plastic and the interior from peat. It weighs approximately 34 pounds. The packaging of Poo Pod also contains a cold-weather urine kit which can be very helpful during the winter. 

  • High-quality
  • No plumbing required
  • No water supply needed
  • Uses a regular-sized toilet seat
  • No urine bottle required
  • Doesn’t leave a bad odor
  • Easy installation process
  • Portable
  • The solid waste can be emptied after 3 to 5 weeks
  • Emptying the composting bin is easy
  • It can hold up to 330 pounds
  • Great reviews by customers
  • The urine bottle has to be frequently emptied
  • Not suitable for people who have knee pain 

Factors to Consider When Choosing the Best Composting Toilet 

Factors to Consider When Choosing the Best Composting Toilet 

One thing is for sure, composting toilets are highly effective and get the job done. Whether you are off the grid on a boat or in a cabin, they can be a great addition to your tiny house. It is about time to replace the old water-hog traditional toilet with a new and sophisticated product. The composting toilets use very little water and don’t need to be hooked up to the sewer system. 

They allow the natural aerobic decomposition process to happen, making them perfect if you have no water supply in your cabin or boat. The composting toilets can be portable or installed permanently with a vent to the outdoors. If you like to do your research and search for the best composting toilet that fits your needs, here are some factors to consider before purchasing. 

NSF certification 

No organization sets the crucial requirements for composting toilets; however, the most reputable manufacturers on the market seek certificates from independent third-party organizations. This ensures the customers that the product they are about to purchase meets the eligibility criteria. The basic standard can be for the composting toilet to be odor-free, the capacity of the tank, and overall did it meet the expectations. 


The type of toilet is one of the most important things you should consider. The composting toilets can be with a self-contained system or a split system. 

Self-contained system toilet 

This type of toilet is the easiest option, and it can be installed quickly without any hassle. On top of that, they are the more affordable choice. The self-contained toilets can be stationed or portable; however, the complete composting process happens inside the toilet. They usually come with a detachable tank and a liquid drain that removes the waste. Some toilets also have a water storage tank and a supply line to help with flushing. 

Split system toilet 

This type of toilet resembles the standard home toilet simply because it carries the waste from the toilet to another location. The standard toilet will flush the trash to a municipal waste system or, if it is in the village, to a septic tank. 

The split system composting toilet flushes the waste to storage, hopper, or a central bio-drum tank where the composting occurs. The methods that come with a hopper come with the most environment-friendly composting process, and they can be a great addition to any eco-friendly home. 


You heard it once and can hear it again; size matters. The high-quality composting toilets tend to be a little bigger than the traditional toilets. For that matter, you need to ensure that you have enough bathroom space to install the composting toilet and comfortably use it. 

If you have a small bathroom and you live in an apartment studio, the best option for you would be a standard toilet or a composting toilet that is extra small. The market doesn’t have tiny composting toilets for now, but we never know what the future holds. 

Also Read: Best Chair Height Toilet

The capacity of the tank 

Another crucial thing you should keep a close eye on is the tank capacity. The manufacturers of composting toilets specifically include the capacity of the tank in the product information. This allows you to make an informed decision compared to an uneducated guess. 

The tank capacity refers to the amount of waste a composting toilet can hold, which is probably odd but measured by the number of people. To clarify, if you have a family of four, the best composting toilet for you would be a toilet rated for four or more people. 

You should also pay close attention to the measurement and whether the toilet is based on residential or seasonal use. A toilet rated for seasonal usage by four people will not have residential use by four people. In that case, the best thing to do is search for a different toilet with a larger tank capacity. 

If the tank fills before the waste is completely broken down, the compost you saved for your garden is no longer available. According to local laws, the only thing left to do is get properly rid of human waste.

Water and electricity requirements 

Many composting toilets can work adequately without connecting to a water or electricity source. These models can range from bigger stationery to smaller portable toilets. But, not all of them can work without electricity and water. 

Some toilets have a 110V electrical system that needs electricity to power the fan. The power supply to the fan can increase the oxygen flow and extract the bacteria. In addition, other composting toilets need a water supply because they come with a water storage tank that can flush the waste more efficiently. 

Smell management 

The composting toilets need to be appropriately vented so there is no build-up of gasses and odors created during the composting process. This feature is often overlooked, and people assume it is all part of the operation. However, improper ventilation can slow down the composting without any oxygen. 

The bacteria are aerobic, and oxygen is required for proper function. As we mentioned, some toilets come with a fan that needs a power supply to move oxygen more efficiently into the tank and force the stagnant air out. If you decide on such a toilet, you may need to add some organic materials to the water, like sawdust which can help block the odor and thoroughly remove the bacteria. 

Frequently Asked Questions 

What is a composting toilet? 

A composting toilet is a new type of toilet that gathers human waste and breaks it down to create a byproduct that can be used to fertilize the soil. These toilets may come with a water line that can help flush the solids and liquid waste, but in most cases, they are waterless and take care of the waste with bacteria. 

Depending on the toilet tank’s frequency, people need to manually extract the bins and empty the toilets every 3 to 5 weeks. The tank capacity also plays a role here, and a larger tank may require emptying after two months. 

How does a composting toilet work? 

The composting toilets are created to hold the waste in a tank where the aerobic bacteria can successfully break down the trash and build a fertilizer that can be used later. The composting toilets work similarly to a septic system, but they separate the liquid and solid waste to help facilitate the composting process. 

Just a friendly reminder, the tank needs to be emptied regularly because the waste is not connected to a municipal waste or septic system.

There are different types of composting toilets, but they all work in the same basic concept. They collect the waste in a chamber usually located beneath the toilet and allow microbes to break it down into 10% to 30% of its original form. 

Some toilets use a few ounces of water for the flushing, and some require additional bulking material such as substrate, peat moss, sawdust, or wood chips. These materials can pull the air into the composting chamber and aid in the evaporation of the liquids composting process. 

Some toilets have heaters and can be used all year round. The organic waste is transformed into a dry byproduct that resembles hummus and can, later on, be composted or discarded in a regular trash can. 

How do you empty a composting toilet? 

The best composting toilets on the market usually have a tray at the bottom and can be easily pulled out. That it is. We recommend wearing gloves. The smaller compost toilets may use bio bags instead of a tray that can be easily lifted out of the tank and replaced immediately. 

As the name suggests, the container composting toilets have a container for the waste that can also be lifted out of the toilet. 

How often should I empty the composting toilet? 

The frequency of how often you should empty the toilet depends on how often you are using it and the tank capacity. On average, the composting toilet needs to be opened after a month, depending on how many people are using the toilet. 

Do composting toilets smell bad? 

The best composting toilets are odor-free. The composting toilets do not smell bad if they are appropriately maintained and if you follow the manufacturer’s recommendations for maintenance. If you are worried about any smell, you can empty the toilet even after a few uses. 

Can I put toilet paper in a composting toilet? 

Although composting toilets are not designed for toilet paper and are not connected to a sewer system, moderate amounts should not harm the composting process. If the composting toilet is the only place where you can throw the toilet paper, we suggest using single-ply because it is biodegradable. 


Hopefully, our article provided you with vital information about composting toilets so you can make an informative decision. Customers highly praise the models we reviewed; they are easy to install and can be used even by people who weigh more than 300 pounds. 

Our choices have a modern design, are long-lasting, and come at an affordable price. Whichever one you choose, you can’t go wrong.

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