What’s the Best Composting Toilet? Top Nine Revealed

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Open Toilet Bowl

Whether you love to go camping or you are just looking for a greener option for waste management, composting toilets are for you. They are like outhouses with a lot less hassle. Below we have compiled a list of the best composting toilets on the market right now to help you decide which one is best for your needs.

Product FAQs

​What Is a Composting Toilet?

​How Does a Composting Toilet Work?

​Who Uses Composting Toilets?

​Where Can You Buy the Best Composting Toilets?

​What Should I Consider When Buying a Composting Toilet?

​How We Reviewed

Toilet bowl, open cabinet and lavatory

Image by rizzidesigns from Pixabay

​To provide you with a list of the best composting toilets, we researched several composting toilet sites and review sites to help us get a better understanding of the different brands and types of composting toilets. We considered factors such as key features, pros and cons, price, and warranty when picking out the best composting toilets for our list.

​Overall Price Range

​The overall price range for composting toilets is between $100 and $2800. The composting toilets at the higher end of the price range are made from higher quality, more durable materials than the composting toilets at the lower end.

​What We Reviewed

  • ​Nature’s Head Composting Toilet with Spider Handle
  • ​Nature’s Head Dry Composting Toilet with Standard Crank Handle
  • ​Spacesaver Composting Toilet – White
  • ​Sun-Mar Compact Self-Contained Composting Toilet
  • ​Villa 9215 AC/DC
  • ​Sun-Mar Excel Non-Electric Self-Contained Composting Toilet
  • ​Biolet Toilet Systems BTS33NE Biolet 33 Non-Electric Waterless Toilet
  • ​Sanitation Equipment Visa Potty Model: 248
  • ​Sun-Mar Corp CSAS-01500B Mobile Electric Waterless Self Contained Composting Toilet
Nature's Head Composting Toilet with Spider Handle by Nature's Head
  • No one - and I mean no one - will beat my customer service and individual support
  • Easy to install by any reasonably handy person.
  • Absolutely No Odor. No Maintenance. 5 Year Warranty.

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

The Nature’s Head Composting Toilet is a self-contained composting toilet. It is compact, making it good for small spaces and off-the-grid living. It includes a built-in fan that that helps to eliminate any odors. The composting toilet is made from durable material easy to clean. It also comes with a 2.2-gallon urine bottle, allowing the toilet to only be emptied once a month.

Its spider handle allows this specific Nature’s Head model to be more compact to fit into smaller spaces than the others. However, some reviewers have noted that this composting toilet is not comfortable for those who are taller since it is so small. Also, some customers complained about having to lift the entire unit to remove the compost.

PROS

  • Compact to fit into tight spaces 
  • Built-in fan keeps away odors
  • Made from durable materials
  • Easy to clean
  • Comes with a 2.2-gallon urine bottle
  • Compost only needs to be emptied once a month
  • The spider handle allows it to fit into smaller spaces

CONS

  • Not comfortable for taller users
  • User must lift the entire unit to remove compost
Nature's Head Dry Composting Toilet with Standard Crank Handle
  • Hand crank agitator in base for fast composting
  • User friendly
  • Easy installation

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

This Nature’s Head Composting Toilet is portable and easy to set up by following the easy-to-read instruction manual. Like the previous Nature’s Head composting toilet, it is self-contained. The unit can be disassembled in seconds to empty the compost. The toilet seat is molded in to make for easy cleaning.

Like the previous toilet, this Nature’s Head Composting Toilet includes a 2.2-gallon urine tank. The unit comes with all the parts necessary for installation, but the user has to put it together themselves. Also, the external vent must be purchased separately. Reviewers also stated that the urine tank must be emptied more often than other composting toilets.

PROS

  • Easy to set up
  • Includes and easy-to-read instruction manual
  • Self-contained
  • Can be disassembled in seconds
  • Easy compost removal
  • Molded toilet seat for added comfort and easier cleaning
  • Includes a 2.2-gallon urine tank
  • Comes with all the parts needed for installation

CONS

  • Must be installed by the user
  • External vent must be purchased separately
  • Urine tank must be emptied often
Spacesaver Composting Toilet - White per 1
  • SELF-CONTAINED COMPOSTING TOILET
  • Odorlessly converts human waste into safe fertilizing soil
  • Same size three chamber Bio-Drum as the COMPACT

Last update on 2019-12-10 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

​The Spacesaver Composting Toilet is only 19-inches wide and 22-inches deep, making it perfect for small, compact spaces. Like the other compositing toilets, it is also self-contained and has a built-in fan that helps deter odors that may arise. The patented bio-drum allows for quick and odorless decomposition.

The waste made in the Spacesaver is turned into rich soil that can then be reused for things such as gardening and planting. Unlike other compositing toilets, there is no assembly necessary for the Spacesaver, as it is shipped completely assembled. However, some reviewers claimed this compositing toilet attracts too many flies.

PROS

  • Good for compact spaces
  • Self-contained
  • Built-in fan gets rid of odors
  • Can be disassembled in seconds
  • Waste is made into rich soil good for gardening
  • No assembly necessary

CONS

  • Attracts too many flies

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

​This Sun-Mar Composting Toilet is certified by the National Sanitation Foundation and is designed to fit into smaller spaces than other Sun-Mar composting toilets. Similar to the last composting toilet, this Sun-Mar Composting Toilet also uses the patented bio-drum to decompose waste quickly.

Unlike some other composting toilets, the liquids in this one do not need to be manually emptied. The liquids are evaporated through a heating tray although there is a drain in the back used for draining liquids in case of emergencies. Solid waste is transported into a finishing drawer once it has been broken down. However, this composting toilet is not good as a mobile toilet, as it can easily splash or spill.

PROS

  • Certified by the National Sanitation Foundation
  • Designed to fit into small, compact spaces
  • Liquids do not need to be removed manually
  • Liquids are evaporated through a heating tray
  • Includes an emergency liquid drain
  • Includes a finishing drawer for broken down, solid waste

CONS

  • Not good for mobile uses
  • Not easily portable
Villa 9215 AC/DC
  • Composting,Waterless,Urine diverting, off-grid, toilet

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

​This composting toilet can either be powered by household outlets or through batteries or solar power, making the possibilities endless on where this toilet can be used. The single speed fan can ventilate up to 20 feet.

Other pieces of equipment that are included are one waste container and waste container lid, 10 compostable bags, and venting and draining parts. However, installation must be done by the user. There are also options for longer lengths, but a separate kit has to be purchased to make that happen.

PROS

  • Can be powered in two different ways
  • Can be used inside or outside
  • Single speed fan ventilates up to 20 feet
  • All other parts and equipment are provided

CONS

  • Assembly is done by the user
  • Kit has to be purchased in order to obtain longer vent lengths
Sun-Mar Excel Non-Electric Self-Contained Composting Toilet, Model#...
  • Non-electric model; ideal for applications off the grid
  • Low profile unit complements any bathroom
  • Uses no water

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

​The Sun-Mar Excel is the best-selling composting toilet in North America. The self-contained toilet contains its National Sanitation Foundation certified bio-drum that allows for quick composting so that the Excel can hold a significant amount of compost. Like the Sun-Mar Compact composting toilet, the liquids in this one do not need to be manually emptied.

The liquids are evaporated through a heating tray although there is a drain in the back used for draining liquids in case of emergencies. Solid waste is transported into a finishing drawer once it has been broken down.

What makes the Excel stand out from the others, is that it does not need to be emptied as often, even if it is used more often. However, the Excel is not good for mobile, as it would splash and leak. Reviewers have also noted that the Excel is very pricey, and most don’t believe it is worth the money.

PROS

  • Best-selling composting toilet in North America
  • Self-contained
  • Contains a National Sanitation Foundation certified bio-drum that allows for quicker composting
  • Can hold a significant amount of compost
  • Liquids do not need to be manually removed
  • Heated tray evaporates any liquid
  • Emergency drain for liquids
  • Includes a finishing drawer for solid waste compost
  • Does not need to be emptied often

CONS

  • Not good for mobile purposes
Biolet Toilet Systems BTS33NE Biolet 33 Non-Electric Waterless Toilet
  • Brings functionality to your home, while offering the trusted, enduring qualities ,...
  • Beautifully detailed, this item captures the essence of old-world elegance
  • Adds a splash of color to brighten up your home

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

​The Biolet composting toilet is made in Sweden and has the feel of a traditional toilet. Unlike the other composting toilets on our list, the Biolet is made with state-of-the-art technology. It is fully automated. When you sit on the seat, the trap door will open, allowing the waste to fall through, What also sets it apart from the other toilets on our best composting toilet list is that it mixes itself, so the user doesn’t have to turn a crank to mix it.

There are two separate containers, one for liquids to be heated up and evaporated, and the other for solid waste to be turned into compost. When the second container is full with compost, and LED indicator will come on to let the owner know. There is also a second heater that will kick on if too much liquid is detected for the one heater alone.

However, some reviewers have found that the liquid container fills up too quickly if it is being used by more than one person. This means the urine tank has to be emptied manually occasionally.

PROS

  • Made from state-of-the-art technology
  • Fully automated
  • Mixes on its own, without the use of a crank or handle
  • Two separate containers, one for liquid, the other for solids
  • Includes two heaters to heat up and evaporate liquids
  • When the compost container gets full, and LED light turns on to notify the use

CONS

  • Not good for families or for use for more than one person
  • If used by more than one person, the liquid take fills up too quickly and has to be emptied manually
Sanitation Equipment Visa Potty Model: 248 18 Liter with 2-level...
  • Easy to use, replacable piston pump with two-directional rinse for enhanced bowl...
  • Extra deep bowl for greater comfort. Lid snaps closed for preventing vibration while...
  • Easy to read tank waste level and fresh water level indicator

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

Unlike the other toilets on our best composting toilet list, the Sanitation Equipment Visa Potty comes with an extra-large bowl so that no waste can splash up onto body parts. It can hold up to 18 liters so it does not need to be emptied often.

It is easy to see how full the tank level is from the outside so you know when it is time to empty it. The inside of the bowl is rinsed using a piston pump. When you finish, the lid snaps shut so that no liquids or odors can escape, which makes it good for mobility as no liquids can splash or spill out. However, the piston pump goes out frequently, making the flush not as effective, but it can be replaced easily.

PROS

  • Includes an extra-large bowl
  • Holds up to 18 liters which can be shown from the outside
  • Inside the bowl gets rinsed by a piston pump
  • Lid snaps shut so no liquids or odors can escape
  • Good for mobility

CONS

  • Piston pump goes out frequently
Sun-Mar Corp CSAS-01500B Mobile Electric Waterless Self Contained...
  • 12V Fan & 115V Heating Element
  • Composting Capacity: 1 Residential or 3-4 Weekend and Vacation Use
  • Engineered to accommodate motion

Last update on 2019-12-15 / Affiliate links / Images from Amazon Product Advertising API Details

  • ​Features
  • ​Warranty

​This Sun-Mar Composting Toilet is unlike the rest because it was designed specifically with mobility in mind. That is why, although it has a lot of the same features as the other Sun-Mar toilets, features have been updated to allow for users to take it with them.

For example, this composting toilet has a finishing basket like the other Sun-Mar toilets; however, it has been gasketed so that no liquids could spill or splash out. There is a special drum lock that keeps the drum lock from spilling or tipping over. The foot rest that is located on all the other Sun-Mar toilets is still there, but it is able to be tucked away in order for the toilet to fit into more compact spaces.

The fan located inside the Sun-Mar Mobile continuously runs while the toilet is in use, and it also has a 3-inch vent to ventilate the system. However, users have to purchase deck vents separately,

PROS

  • Designed for mobility
  • Gasketed finishing basket to prevent leaks and spills
  • Included a special drum lock to keep drum lock from tipping over
  • Fan continuously runs while toilet is in use
  • Excellent ventilation with its 3-inch vent

CONS

  • Vent decks must be bought and installed separately

​​​The Verdict

Toilet Lavatory, bowl and some other equipment

Image by Lanz-Andy from Pixabay

After considering factors like key features, pros and cons, price, and warranty, we have come to the conclusion that the Nature’s Head Composting Toilet with Spider Handle is the best composting toilet. 

From its compact and easy to clean design to its 2.2-gallon liquid bottle, it is a no-brainer that the Nature’s Head Composting Toilet with Spider Handle is the best composting toilet on the market right now.

Featured Image by Michal Jarmoluk from Pixabay

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