I Tested And Reviewed 8 Best Composting Toilet For Tiny House (2023)

I recently purchased the Boxio composting toilet for my van camping trips and I must say, it is a great affordable option. The construction of the toilet is sturdy and well-made, and the price is much lower compared to other composting toilets I was considering. The capacity of the toilet is also sufficient for one person, which is perfect for my needs. Additionally, the compact size of the Boxio toilet fits perfectly in my van conversion.

However, I do have one minor complaint about the toilet seat. It is quite narrow and long, which makes it uncomfortable to sit on for long periods of time. Compared to the bucket toilet seat I had before, which had a seat similar to home toilets, the Boxio seat is not as comfortable. Sitting on the skinny edges of the box frame also adds to the discomfort.

As someone who has lived with this composting toilet for a while now, I wanted to provide a comprehensive review to address some of the questionable information I have seen online regarding the Boxio unit. My partner and I have been live-aboards for almost ten years, and we have always used a DIY composting toilet. Unfortunately, the design of our previous toilet was not working well on our new boat, making it difficult to clean and dump. We were looking for a more affordable option and decided to give the Boxio unit a try when it became available on Amazon.

The construction of the Boxio unit is compact and solid. It is built similar to a milk carton, which gives it a sturdy feel. The urine diverter is also made of thick plastic, providing additional durability. The internal containers for waste and urine are molded plastic and are adequately solid.

Assembly of the toilet is quite simple. The unit comes well-packed, and all that is required is to screw in four post-and-screw assemblies on the corners. A hex wrench and washer are provided for easy installation. The lid is attached using an included cord as a hinge. Initially, I had concerns about the strength of these posts, but once installed, they proved to be quite solid.

In terms of use, the urine container effectively keeps all odors away from the living quarters. Although we were initially concerned about its size, it is larger than it appears, and we find ourselves needing to empty it on a daily basis. However, it is usually only half full, so it is not a major inconvenience.

The solid waste container utilizes biodegradable liners, although they are optional. Dumping the waste is a simple process of gathering up the sides of the bag and twisting it to close, which is very effective. The hemp biomass provided with the kit works well and can be used sparingly. In the past, we have used wood stove pellets as biomass, but we have not tried them with this particular composting toilet. However, I see no reason why they, or other alternatives like coir or sawdust, wouldn't work just as well.

One of the standout features of the Boxio toilet is its lid, which does an excellent job of containing smells and keeping flies out. It fits snugly and provides peace of mind.

There are a few aspects of the toilet that we particularly like. Firstly, there is no odor at all, which is a major plus. Additionally, the easy emptying process and compact design allow the toilet to blend seamlessly into the environment when not in use.

However, there are a couple of minor drawbacks. Firstly, the toilet is quite low, even with the raised base we ordered. This may not be an issue for everyone, but it is something to consider, especially for those with mobility concerns. Secondly, there is a small detent in the seat/urine diverter at the front, intended to facilitate opening, but it is not very effective. I often find myself having to use my fingers to open and dump the contents, which can be a bit unpleasant.

Another point worth mentioning is that the urine container can only be emptied by unscrewing the seal in the center. Although it has a convenient carrying handle, the handle obstructs the flow of urine when you turn the bottle over to empty it, making it difficult to get every last drop out. Adding a side drain on the top or moving the handle to the edge would solve this issue.

– Don, aboard the shantyboat "Dragonfly"

I recently had a composting toilet installed in our Casita travel trailer and I couldn't be happier with the results. It took us some time to find a company that would do the installation for us, but we eventually came across Little Home on the Road who did a thoroughly professional job. They steered us towards the right brand and model for our space, and the spider crank they chose was a perfect fit.

One of the things I appreciate about this composting toilet is that it effectively separates liquids and solids, and we only need to open the trap door to the solids container when necessary. By following the manufacturer's instructions and using the fan, there have been no odors whatsoever. In fact, the faint aroma that we couldn't get rid of with traditional black tank chemicals is completely gone.

The urine jug is easy to monitor during daylight hours as the level rises above the edge of the base. However, shadows can be deceiving in the evening and nighttime, so we have decided to get a second jug for convenience. With two people using the toilet consistently, we typically need to empty the jugs every two days. Adding white vinegar to the empty jug helps prevent any unpleasant aromas from building up.

We have been using coconut coir as the composting medium and it works great. We simply crumble up a brick in a 2 ½ gallon bag with water. The solids bin does contain more than just coir, but there is no unpleasant smell. When it's time to empty the bin, we detach it, put a garbage bag over the top, and turn it over. If it's too heavy to carry, a small dolly can easily solve that problem. The fan helps to dry out the solids, making them lighter, and any remaining material on the walls of the chamber aids in the composting process.

The only minor drawback is that the composting toilet is a bit taller than the original toilet, but we installed an assist handle on the wall next to it, which has worked perfectly. Another great feature is that the wet bath is not affected by the composting toilet, so we can still shower without any issues. Cleaning the bathroom is a breeze with just a quick wipe down.

In terms of other benefits, not needing water for flushing makes drydocking much easier and conserves our water supply for longer trips. It's also great for winter camping as freezing pipes are no longer a concern. Additionally, we no longer need to do black water dumps, which is a huge advantage for longer trips into remote areas.

I am thoroughly impressed with this article. My three-year-old child is quite large and weighs over 60 pounds, making it impossible for him to use a regular toddler potty. After searching extensively, I came across this toilet and it has been a game-changer. Not only does my child love using it, but it is also incredibly comfortable for him.

Assembly was a breeze, and it was perfect for our camping needs. Additionally, I purchased it for a friend who has difficulty with stairs so that they could stay longer at our place without any inconvenience. It has definitely made their life easier during visits.

I would have personally loved this toilet, but unfortunately, I didn't consider the measurements of the person it was intended for. However, I am grateful that I was able to give it to someone who could benefit from it.

The only downside I encountered was that the instructions were not very clear, with only pictures and minimal written guidance. It was frustrating to assemble, especially when it came to attaching the handles. The top had to be screwed down, which made it impossible to fit the handles in. Nevertheless, despite this issue, the toilet is still usable.

My only suggestion for improvement would be to make the armrests a bit wider. This would be particularly beneficial for plus-size individuals who may find the current armrests a bit constricting. Other than that, the quality of the product is excellent.

I recently purchased the custom wood composting toilet bench for my guest cottage, and I must say, it has been a game-changer. However, I encountered some difficulties when it came to controlling the application of peat moss and keeping the toilet odor-free, especially when guests sat down to pee. Thankfully, I discovered this urine separator, and it has made a world of difference.

The urine separator fits perfectly on my bench, allowing the urine to be removed from the main composting system and directed to a separate holder for easier management. This urine can then be repurposed as fertilizer by simply adding water and distributing it in the surrounding forest area. Not only is this an environmentally friendly solution, but it also comes at a very reasonable price.

I also love using this urine separator when I go camping. With my 7-gallon bucket, I attach a hose to the separator and connect it to a 1/2-gallon plastic bottle. This eliminates the need for using pallets and instead allows me to use a plastic bag and peat moss on the backside. The result? No more unpleasant odors and a much more convenient camping experience.

Even those who have attempted to create their own urine separating toilet, like myself, have found this product to be a lifesaver. It fits perfectly on a 5-gallon bucket and is easy to install with its flexible hose and clamp. The hose goes through the bucket and floor, directing the solids into a bag in a dug pit. What's more, there is no splash back, thanks to the deep cup design that ensures liquids flow smoothly.

I must address a misleading review I came across before purchasing this product. Contrary to what was stated, the urine separator is indeed sturdy and non-bendable. Additionally, while the dimensions may not have been fully specified, the poo chute is approximately 4 inches deep, while the pee tube is 5.1 inches deep. This means that it fits well over the rim of a true 5-gallon bucket, which typically accommodates 3.5 to 7 gallons due to their consistent diameter.

Living off-grid in Wisconsin, we rely on a bucket system to compost our waste, and this urine separator has been a fantastic addition to our setup. Not only does it effectively divert urine, but it also adds an aesthetic appeal to our composting system, making it less intimidating for visitors.

I recently installed this wasteless toilet in my travel trailer and I am extremely satisfied with its performance. The technician at my local RV shop was able to connect the air exhaust to the former black water tank, which is vented to the roof, resulting in no unpleasant smells whatsoever. The fan is connected to a kill switch, so it only runs when the trailer has power. According to the specifications, it does not drain the battery significantly, similar to a phone charger.

The clean-up process is easy and hassle-free, and to my surprise, my wife loves the contemporary design of the toilet. It looks high-quality, resembling a Kohler toilet. Everything needed to assemble and use the toilet is included in the package, making the installation process convenient.

In my quest to find a suitable toilet for our new ADU with limited plumbing and a small bathroom, I extensively researched various options. After careful consideration, I decided to order the Tiny wasteless toilet. Setting it up was relatively simple, and we were able to try both number 1 and number 2 a few days later. The toilet performed excellently in both cases.

The compact size of the Tiny toilet is perfect for our limited space, and the automatic opening of the internal lid when you sit down adds a touch of convenience. It provides a similar feel to an ordinary toilet, without any unpleasant odors when the lid is closed. Additionally, emptying and cleaning the toilet is a breeze.

I recently purchased a sink and toilet combination and I am extremely satisfied with my purchase. The shipping was fast, which was a definite plus. The toilet was easy to assemble, but I did encounter some challenges when assembling the sink. Attaching the sink basin to the pedestal required some effort and I had to use a cross brace and a bit of force to make it click into place. While the construction may not be perfect, overall it is a fair combination.

I bought this combination because I have only one bathroom in my 5-bedroom house and it is located upstairs. Although I haven't used it yet, it appears to be sturdy and ready for use. I am excited to try it out and see how it performs. However, I do have some concerns about the durability of the sink spout, as it doesn't seem very sturdy or intact. I will provide an update on this once I have used it.

In terms of installation, I found it relatively easy to set up. I did use packing tape to secure the basin, as it was a bit ill fitting. Additionally, I discovered that using plenty of water in the reserve tank helped the pump and flush function more effectively. I also added a nearby spray bottle with essential oil scent for a final targeted spray to ensure cleanliness.

The rig mentioned in the review is highly praised for its performance and convenience. The reviewer suggests that it is perfect for transporting goods and even compares it to a horse trailer, emphasizing its usefulness. They also appreciate the ease of comfort and quick release features, stating that it is worth the investment.

Moving on to the composting toilet review, the reviewer shares their experience of purchasing the toilet for their off-grid property. They repurposed a deer blind to create an outhouse and found the toilet to be a great addition. They mention the built-in electrical fans and the option to directly wire it to a battery or a 12-volt plug. The setup process was relatively easy, although they had some difficulty with the electrical wiring due to their lack of experience. Overall, they are satisfied with the toilet and its functionality.

In another review, the reviewer compares two different composting toilets – C-Head and Nature's Head. They initially had some issues with communication and delivery from C-Head, which led them to purchase the Nature's Head instead. They express their satisfaction with the Nature's Head, stating that it is a better unit overall. They appreciate the easy cleaning process of the bowl and the smooth design that directs urine towards the appropriate container. They also prefer the horizontal churn mechanism and the coconut coir medium in the poo chamber. They recommend the Nature's Head as a superior option, despite the slightly higher price.

I purchased this product for my off-grid cabin, which does not have running water or a functioning plumbing system. With a 3-year-old who is currently potty training and my frequent trips to the bathroom at night, having this portable toilet in the corner of the cabin has made our trips much more convenient. The sink is designed to drain into the flush tank, reducing the overall water usage. While it does require emptying into an outhouse, I have found a chemical solution to effectively manage odor and dissolve the paper.

The assembly process was straightforward, and it is evident that this product has been well thought out. The seat portion with the holding tank can be easily detached when it comes time to empty it. The base effectively contains any mess, ensuring that you are not exposed to it. The holding tank can be carried like a gas can to be emptied into a toilet or any suitable location. The design also includes a stowed pipe that can be easily accessed when needed. All components are securely capped off until you require access. I have only used this product for liquid waste, but it has performed flawlessly.

Additionally, this portable toilet has proven to be a valuable addition to the "tiny house" we built for my mother. We have experienced no issues with its functionality, and it was delivered promptly.

I must admit that I initially did not have a need for this product, as I already had a functioning one. However, due to the unfortunate circumstance of my previous product breaking, I ended up purchasing this one. Before making the purchase, I read reviews from previous buyers to determine if it was worth investing in. The positive feedback from other customers further piqued my interest, and I decided to give it a try. Upon its arrival, I was thoroughly satisfied with the results and confident that it would surpass the performance of my previous product.