Thetoiletthrone may earn compensation through affiliate links on this page.

Best composting toilet reviews 2021

Some people prefer to live their life in peace, stress free, and away from the hassles of everyday life. There is a growing number of people looking to live in remote locations, or perhaps off the grid entirely. There are also people wanting to take extra vacation time away. All of which is understandable. Composting toilets are a sensible option in such a living situation because they are portable, compact, and make light work of dealing with waste.

We take a look at some of the more popular dry flush toilets and several of their alternatives below to help our readers find an option that’s right for your requirements.

Top 3 picks – Our ratings

CSEM-01400WB Sun-Mar CSEM-01400WB 9/10
NH-SPH Natures Head NH-SPH 8/10
92360 Porta Potti Thetford 92360 Porta Potti 7/10

Our reviews

Looking at several top options available to you at the click of a button online, it becomes apparent that there is a great deal of choice available in what they can do, their features, and price tag. We have chosen some more popular models available online, based on consumer feedback on them and highlighted their key specs.

Ideally, this will pave the way to you finding a good match be it for camping usage, or something like an outhouse.

92360 Porta PottiThetford 92360 550E Curve

Those of you familiar with our portable toilet article may of seen us cover the features of this product. Nevertheless, this makes an ideal option for those with limited resources available to you.

A simple, yet nice design with a stylish curve at the front allows it to be somewhat more aesthetic than several of its competitors in our opinion.

It also gives the user some indication of its water or waste level in the tank to prevent overflowing. This tank comes with an easy to carry handle that makes disposal simple and efficient. The tank itself can hold a considerable amount. The manufacturer says it can hold 4 gallons of fresh water, and 5.5 gallons of waste water, which is quite good. You don’t want this to be too big a figure as the disposal methods will become harder and harder.

The seat height isn’t too low, and it’s equipped with a great little design feature of a integrated toilet paper holder which saves space in enclosed environments like RV’s and tents.

The dimensions are listed as 17.8 inches by 15.5 inches by 17.6 inches which further hits home what we mentioned about this type of loo offering a compact solution for your living spaces.

This is generally seen as one of the products at the lower end of the price spectrum, but gets the job done for many purposes.

NH-SPHNature’s Head NH-SPH Self Contained waterless toilet

For those of you looking for something more advanced, this brand offers another reasonably compact composting toilet which is designed to limit odors and be lightweight. Ideal for confined quarters, and off the grid living areas.

A built in fan recycles air which helps keep odors to a minimum, which has been known to sometimes be a complaint for some people using other models.

The manufacturer claims that because of its origins of its design lies in maritime usage, its built to last with highly durable materials like stainless steel, which, as it happens, is simple to clean.

Slightly larger than the option above with dimensions listed as 22 inches by 20.5 inches by 21.7 inches.

But with the added specifications, and professional build, you can expect the price to be quite a bit more expensive than much of the competition. A question of durability over value perhaps.

CSEM-01400WBSun-Mar CSEM-01400WB

A nice exterior that ensures it keeps a minimalist look and feel about it, which we feel is quite important given the compact nature of these bio toilets. It comes with a white finish and has some good features that will help you have peace of mind.

This unit doesn’t use any water and is very good for the environment, something overlooked by some shoppers. The evolution of bathroom accessories over the years has really improved in this regard.

The great thing about this product is that it transfers human waste into usable soil that can be used in the fertilization process. Again, going back to the point made previously about the good that can be done for the environment. And perhaps, just as importantly, it does this without the odor associated with it.

Quite expensive, but there is some quality features to be found within.


The three options listed above were chosen because of their vast differences in prices, features, and purpose. We hope that the reviews outline the main benefits of each and help you come to an understanding of which best suits your own needs, be it for a residential toilet or otherwise.