I would like to suggest Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design. It’s a budget-friendly toilet that is easy to install that only requires to hire a professional plumber. It comes with a huge capacity that lets 2 people use the toilet full time. The unit requires no maintenance and emptying the toilet requires just 5 minutes. It’s an eco-friendly product like dual flush toilets. 
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Vermi composting doesn't destroy ascaris ova. Good system for waste reduction and stabilization but it's not a reliable full pathogen destruction process.

Geoff

www.researchgate.net/profile/Geoffrey_Hill

Geoff Hill Toilet Tech 206-713-7805

Hi Benno,
About that link to Amazon and Nature's Head I think you are referring to the post by user Groove at the very start of this thread in July 2018 when he or she wrote:

I am also looking for a good composting toilet and now I'm choosing from both www.amazon.com/exec/obidos/ASIN/B009Z7EK...m=0&tag=ventlessr-20 and Wisepick (link had to be deleted), maybe anybody used it (or something others) and can recommend?

I just thought I would clarify this.

To all,
FYI: I have now moved the discussion about Wendy's vermicomposting system into a separate thread (forum.susana.org/290-vermifilters-for-bl...rdinary-flush-toilet) to keep everything neat and easy to follow. I have put a link from one thread to the other and vice versa so one can still find the different discussions.

Regards,
Elisabeth

I would like to take us all back to the question at the head of this string. "Which composting Toilet to choose "
This invites personal preferences and for me as a non academic I would choose a urine diverting dry pedestal coupled to a continuous composting chamber, probably vermicultural, if there is such a word.
I have come to this choice after 30 years of design and manufacturing system parts for the Compost Toilet Industry, and my own systems, my choice being heavily influenced by feedback from actual long time users.
From where I stand I see no going back to flushing toilets , the world recognises the commodity value of water and the movement away from chemical fertilizers, making our excreta no longer a waste but a resource.

Hi Ben

Not me! I would go so far as to say I have an allergy to the things. Massively overcomplicated and a total pain in the ass to clean. Wouldn't dream of linking to them! Give me a Joe Jenkins bucket system any day if you want a dry toilet.

Best, Wendy

Hi Wendy ... I easily could have misread something on the forum, but I was responding to what I thought was a link in one of your communications that referred to an amazon listing for Nature's Head. You, or the writer, seemed to express an interest in them. I wanted to offer an alternative.

I am all for using worms in humanure.

Best ... Ben

Hi Ben.

I'm somewhat puzzled by your response. I'm not sure where you picked up that I have some interest in the Nature's Head system?! Are you confusing me with someone else perhaps? I have no interest in it at all. I developed my own vermicomposting system (detailed in my post above) which is all I use as well as Joe Jenkins' humanure bucket system.

Comment by moderator: Wendy Howard described a composting toilet that she has developed. Her post and a discussion that followed are now available in a separate thread here: forum.susana.org/290-vermifilters-for-bl...rdinary-flush-toilet

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Thanks for your thoughts, Wendy … I see that you have some interest in the Nature’s Head System. Because of it’s small size and challenging access to the collection area for removal, which translates into high and unpleasant maintenance concerns, I urge you to consider other options for residential full time use. If you are looking for a commercially available self-contained, urine diverting batch system, please consider the Separett Villa. I’m positive you will find the maintenance requirements for the Separett’s interchangeable bins to be much friendlier to navigate than the tedious removal process for the Nature’s Head. Separett also offers a UD seat if you want to construct your own batch collection privy. I have been installing Separett Villas and privies successfully in residences and for public locations, coupled with zero-discharge aerobic sequestering bins for commingling the batches for going on a decade. I support using the Rich Earth Institute UD protocols. richearthinstitute.org.

Your comment about marketing and consumerism is valid and appreciated. It’s been my observation of Nature’s Head and Air Head, and other systems, that they use clever marketing to oversell the capabilities of their product. This convinces consumers that it will work well for full time residential use. I believe there are other systems out there that are much easier to use. Not to belittle anyone’s product, but I think Nature’s Head is great for short time use, such as on a boat, or for a weekend retreat cabin. They are appealing due to their low cost, but it has been my experience that the lower the cost, the higher and more unsavory the maintenance. There are plenty of good systems out there. If they are installed inappropriately, and the end result is the user has a poor experience, then that gives the concept of composting toilets a bad name. None of us want that.

On another note, Anna Edey was way ahead of the modern sustainable agriculture curve for her time. I visited her very productive farm and greenhouse many (many) years ago to view her composting system. Memory is fuzzy, but I think the visit was because she had been shut down by the Board Of Health for exposure of uncomposted waste in proximity to food she was growing to sell. The sandy porous soil in SE Massachusetts, where she lived, also has a very high water table so she was at high risk of ground water contamination. Other readers on this forum may also go back that far in history and have a clearer memory than I.

Thanks for your work with permaculture

Ben

Anyone considering a "composting toilet" (what exactly do you mean when you use this term?) would be best served by reading the entire thread here .

If you want to buy a composting toilet you should know: where and when (part-time/full time) will you use it, who will use it (it is important because you have to choose between manually-operated, semi-automatic, or fully automatic operation toilets), do you need electric or non-electric and etc (from inspectapedia.com/septic/Composting_Toilets.php). If you will answer yourself all these questions it will be easy to choose the right one. There are many articles about composting toilet brands. You may check this review .

P.S. Some tips for this type of toilets you may find here www.cottagetips.com/tips/composting-toilet-tips/.

I know its too late for the reply but still here's my experience,

At first I was too worried about using a composting toilet,But with time I learned a lot about it by reading different sources.The only main concern was how would I teach my child using one as he will get hesitant using it as he is not used to it, I got a source topreviewedten.com/all-about-composting-toilets/ which helped me a lot to teach my child using composting toilet and has a lot of beneficial information too.I hope this might help you.

I have bought Nature's Head Dry composting toilet after reading the reviews of the customers and going through this source topreviewedten.com/best-composting-toilet/ its been a few weeks of using and it works well

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Comment by moderator (EvM):
The discussion continued here but focused more on the definition of a composting toilet:
forum.susana.org/241-composting-toilets-...ng-toilet-a-misnomer

Hello,

Sorry for seeing this so late, I bet you have already got the toilet by this stage. Anyway, just for the benefit of the forum I'll say my piece:

Thank you so much for your email. There are two types of composting toilet . An "internal composting toilet" and a "urine diverting compost toilet". The internal composting one does not separate solids and liquids and the waste breaks down to compost in the unit which means you never have to deal with raw waste. The urine diverting one separates the solids and the liquids but does not break the solids down to compost in the unit - you do that outside in a composting bin. You can read a full explanation here:

www.toiletrevolution.com/news/urine-diverting/

Examples of the urine diverting:

Separett
Natures Head
Air Head

Examples of the internal Composting:

Sun Mar
Biolet
Envirolet
Etc

We are the dealer for some of these brands. The advantage of the urine diverting one is that there is no maximum capacity as you are not waiting for composting to happen. The waste comes out in containers unbroken down. The advantage of the internal composting one is that the material breaks down in the unit so taking of the composted material is less frequent and more pleasant. Hope that helps

Patrick
www.toiletrevolution.com/