Top 4 Best Composting Toilet Reviews

It is important to understand that contributing to nature and saving the environment is the indispensable nowadays due to numerous regulations you have to follow.

People from all over the world decided that it is important to care and understand the nature. Therefore, they ensure that you take necessary steps to reduce waste, which is the number one reason for environmental problems.

The advancement in technology brought us a list of the best composting toilet, but still, people don't know what it is. We decided to present you our best composting toilet comprehensive review and buying guide that you can find on the market.

Let's start by seeing what are the best composting toilets:

In short, you should have in mind that composting toilets are perfect choices for human waste management especially if you have lousy septic systems or sewer. Toilets that we own in our houses haven't changed since their invention. The idea is to add water that will flush out human waste and carry it somewhere else.

Most people think that sewer treatment is expensive and apart from that, you should make it ecological without the possibility of harming the river in your city or anything else. That is why most people that live in remote or rural locations carry waste into the septic tank that they have to pump out every few years.

However, if you don't have regular and municipal sewer hookups, and you don't want to spend extra funds in building a septic system, then you should consider best composting toiletThe main reason for its popularity is the idea that everything is completely environment-friendly and safe way to human waste disposal.

Best Composting Toilets Reviews and Buying Guide

Reviews of the Top 4 Best Composting Toilets at a Glance

Sun-Mar Compact Self-Contained Composting Toilet

If you want to choose a best composting toilet that will provide you peace of mind, we recommend you to consider Sun-Mar Compact Self-Contained Composing Toilet. You should have in mind that Sun-Mar is one of the most prominent brands when it comes to composting toilets.

It is one of the best solutions for composting toilet that you can find on the market, with the amazing decomposition of individual waste that will reduce the hassle. At the same time, it contains numerous features that will help you work with it.

The first thing that we have to mention is that contains self-reliant electrical consumption. You don't have to worry, because this particular toilet will make sure that you get a perfect price for the investment.

It features Bio-drum which is amazing so three people can use it without any additional problem. You should have in mind that it features NSF certification for six months use.

You will get a five-year warranty on the shell,one of the longest warranty of our best composting toilet and a three-year warranty on parts, which is a way better solution when compared with other composting toilets on the market. It features small size, which will fit anyone and save you additional space in your home.

The great thing about it is a completely odor free operation that will provide you the possibility to enjoy the freshness. Due to 3-chamber technology, everything will be odorless all the time, so you will be able to decompose waste through aerobic action.

In overall, Sun-Mar Compact Self-Contained Composing Toilet is a great solution of our best composting toilet article that will protect your home against frustrating odor and help the environment out at the same time. Even though the price tag is high, you will get amazing features and great warranty deal. Finally, you will get something that will last at least a few years after purchase.

Amazing Features:

-Dimensions are 21-1/2-inches in width, 33-inches in length, and 28-1/2-inches in height.

-Finally, everyone will be able to fit it without too much hassle.

-5-year warranty on shell and 3-year warranty on parts

-Completely odorless operation due to 3 chamber technology

-It contains NSF certification, so you will be able to use it for years that will come


  • Self-sufficient electrical consumption
  • 3-chamber technology for odorless operation
  • Longest warranty deal on the market
  • Bio-drum feature
  • Environment-friendly


  • Expensive price tag
  • Installation hassle

Sun-Mar Excel Self-Contained Composting Toilet

We have to mention another Sun-Mar for our best composting toilet because this particular brand is one of the most popular on the market. The thing that defines brand is that you will find two products on the list of four best products on the market.

Sun-Mar Excel Self-Contained Composting Toilet is similar as the first product we've mentioned above. Even though they're equal in some areas, some features differentiate them from the rest.

The first thing that we want to mention is that you will get what you're looking for with this particular composting toilet. It is a non-electric replacement that you will be able to use without too much hassle.

It comes with low-profile units that will fit any restroom wherever you want to place it. It is a great product that features Bio-drum, which is similar to the first Sun-Mar product we reviewed above for our best composting toilet article. However, the diameter is variable, and it features handle processes compost, which is a better solution than the one we've mentioned above.

It doesn't matter if you have a big family, because it is perfect for a family of 2 to 3 people. You can also use it on camping sites, and then you will be able to use it without any additional problem. If you hate odors, you can rest assured, because you will be able to enjoy all the way.

It is important to mention that it features excellent composting capacity when compared with other toilets on the market.

In overall, Sun-Mar Excel Self-Contained Composting Toilet is a great solution that will handle most needs. It doesn't have electronic features, but it is still a great deal that you can use wherever you want.

Amazing Features:

- It comprises amazing capacity when compared with other composting toilets on the market.

- It can handle continuous use of 2-3 people or weekend use of 5-7 people.

- It features non-electric unit that will provide you better cleaning and compost without too much hassle.

- Completely odorless due to 4-inches vent, but you have to fit it 3 feet away.

- Compact dimensions with 31-1/2-inches x 22-1/2-inches x 33-1/2-inches so that you can keep it in the home, RV or camping area.

- Comfortable and ergonomic shell


  • Excellent design
  • Easy to clean
  • Great size and height


  • It lacks advanced, tech features
  • You have to fit vent at least 2 feet away from the toilet
  • Pros:
  • Cons
  • Due to the compact design, it can fit most toilets
  • Comfortable and simple to use
  • Great composting capacity
  • Perfect for camping trips, RVs, and household use
  • Odorless due to 4-inches vent

Nature's Head Self Contained Composting Toilet

Finally, we're here to present you a different brand than first two when it comes to the best composting toilet. Yes, we're talking about Nature Head, which is one of the most popular manufacturers in the USA.

Their main idea is to create products that will provide you with a completely nature-friendly feature, which is much better than traditional toilets. It is important to mention that it comes directly from the USA, which is why most people tend to purchase it due to domestic reasons.

It features stainless steel hardware, which means that you'll get a durable product that you can clean in a matter of seconds. It is a way better solution when it comes to durability and overall strength and quality for our best composting toilet list, especially when compared with other composting toilets on the market.

It contains full-sized ergonomic and elongated seat so that you can enjoy in additional comfort while seating. If you want to use it for camping purposes, you chose a right product. The great feature is that you will be able to install and disassemble it in a matter of minutes, one of the fastest easy solution for our best composting toilet article.

It is completely environment-friendly so that everything will decompose in a matter of seconds. Using without too much hassle is simple. It can decompose 2-gallon storage of human waste without any additional problem.

You don't need drainage system to make decomposition because the waste will be over in a matter of seconds. In overall, Nature Head composting toilet is a great solution that will give you peace of mind for both camping and RV purposes.

Amazing Features:

-Completely eco-friendly due to fast decomposition system that will allow you to use it with ease.

-It can easily decompose 2-gallon storage of human waste which is perfect for long routes.

-Stainless steel design will provide you added durability and possibility to clean it in a matter of seconds.

-Due to reverse fan action, you can rest assured, because everything will be odorless.

-It is simple to install, which is why it is the first choice among RV and camping enthusiasts.


  • Stainless steel for additional durability
  • Simple to clean
  • Completely odorless due to reverse fan action
  • Can withstand up to 2-gallon human waste
  • Simple to install and disassemble


  • Significant price tag
  • Short warranty deal

Nature's Head Dry Composting Toilet

We have to mention another Nature Head best composting toilet because you will get everything you need with this particular one. We have mentioned above that Nature Head is one of the best providers when it comes to composting toilets is the united states.

At the same time, it is one of the most significant brands in the world where main competitors is Sun-Mar toilets. You should have in mind that it is simple to use and will provide you with an eco-friendly boost to the environment.

The main thing Nature Head manufacturers want to present to their customers is nature-friendly features that will reduce the hassle of decomposition. Even though it is similar to the previous product we reviewed, it features fast compositing process.

Due to hand crank agitator, you will be able to make sure that everything passes as fast as possible. The molded design provides additional ergonomics so that you can enjoy in comfort and durability.

The storage is significant and excellent, which means that toilet will separate waste from urine, without causing leakage anywhere. According to most users, it is one of the most durable and best composting toilet on the market.

The design is handy because you will be able to clean it with ease. At the same time, due to Odor Eliminating system, you will enjoy in odorless decomposition. It features fan and vent that will get rid of odor in a matter of seconds so that you can enjoy all the way.

We have to mention 5-year warranty that you will get by purchasing it.

Amazing Features:

-Completely odorless due to Odor Eliminating system with the help of fan and vent

-Compost storage can compost for between 60 and 80 uses. It can store up to 2.2 gallons of urine.

-Perfect for boats, homes, cottage houses, RVs, cabins and camping trips due to the simple installation and compact size

-Reduced water consumption will make it eco-friendly


  • Significant decomposition storage
  • Durable and compact
  • Perfect for outdoor and indoor use
  • Eco-friendly
  • Completely odorless


  • Expensive price tag
  • It can wear off after a while
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What Is A Good Composting Toilet?

What is a Top Composting Toilet Info Graphic

You don't have to worry, because the entire process is quite straightforward and natural. You have probably used a garden composter, which works similarly to this particular toilet. You can think of them as modern and smart versions of those, but you don't have to dig a hole or deal with pests and smells.

It doesn't deposit waste by mixing liquids and solids through a sewer or into the hole, the idea of composting toilet is that it can break down human waste, separate liquids and evaporate it. It uses decomposition naturally to make it into nutrient-rich and usable waste.

The main problem with human waste is that 90% is liquid, which means that toilet will separate solids and liquids, and by doing it, will leave a less significant waste than before. On the other hand, water removal depends on the type of toilet you have.

Some of them feature the ability to separate solids from liquids, while others separate them in storage containers and use evaporation techniques for liquids. Finally, you can rest assured; because you will get solid waste that you can decompose it without compromising the environment from our best composting toilet list.

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Things to Consider When Buying the Best Composting Toilets

Climate Consideration - When choosing the best composting toilet, you should have in mind that certain amount of heat happens during the composting process because microorganisms will generate energy while working.

If you live in cold area, then it can slow the growth of bacteria and the entire process. It is important that temperature is at least 55-degrees F so that composition can occur.

Zoning Requirements - Even though there are no rules and regulations that apply for composting toilets, you should consider and check building standard and code by your county, town or state. For example, you should find a toilet that features NSF certification, so that you can install it anywhere you, please.

Self-Contained or Centralized Compost Toilet Systems - This is the question because there are two types of compost toilet systems. Self-contained is functional and act as a toilet and composting chamber all at once.

You can find both non-electric and electric versions. On the other hand, centralized compost toilet systems have separate storage somewhere on the property. It functions similar to traditional toilets, but waste goes to a composting container that will completely decompose it.
Best composting toilet - Why should you use composting toilet for the environment?

Why Should You Use a Good Composting Toilet?

  • Odorless - The first and main reason why people consider using the composting toilet is that they feature microenvironment that will decompose waste without the smell and continuous process. Some of them feature airflow vents.
  • Perfect For Areas With Scarce Water - If you live in rural area where there are no conditions to make sewage system, then composting toilets are the best solution for you. Some areas have a deficit of water due to low rainfall, so you can reduce expenditure by finding an appropriate composting toilet.
  • Environmental-Friendly - You can see in our composting toilet reviews, that they are a great resource that will help our community by reducing waste. The main problem in most neighborhoods is the condensed waste that goes through sewage systems. However, this is a more affordable solution than installing a septic tank.

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Over to You

We have presented you thorough buying guide and reviews of the best composting toilet that you can find on the market. As you can see from everything that we've mentioned above the first and main reason why people choose, it is due to its convenience in decomposing human waste.

Apart from useful features that will give you peace of mind and less hassle, it is eco-friendly because waste is one of the reasons for environmental disasters. Therefore, use of composting toilets will help you protect the nature.

If you have anything to ask or to add for our best composting toilet article, feel free to send us a message and we will answer you on short notice.