10 Best Composting Toilets 2025 in the United States

The OGO™ Compost Toilet stands out as a practical solution for those who live in RVs, tiny houses, boats, or off-grid environments. Its urine separating feature is a highlight, effectively preventing odors and eliminating the need for chemicals or water, which is a big plus for users looking for a more eco-friendly option. The toilet's capacity allows for 25-30 uses for solid waste and 2.4 gallons for liquid, which is reasonable for its intended use in smaller spaces.

One of the strengths is its robust build quality, designed to handle up to 550 lbs, ensuring durability over time. Its compact size (15"L x 16"W x 18.4"H) makes it suitable for tight installations, and the modern design adds a touch of aesthetics to small living areas. Maintenance is straightforward due to the removable solids bin and urine bottle, making cleaning a hassle-free process. However, users should note that, while the toilet is designed to be odorless, proper ventilation is still important for optimal performance. It does not require a black tank or dump stations, which can be a significant advantage for those who travel frequently.

On the downside, the OGO™ Compost Toilet has a Best Sellers Rank of #313,898 in Automotive and #80 in RV Toilets, which might suggest that it's not as widely recognized compared to other models. As for power sourcing, this unit is electric, which means a reliable power source is necessary. If you are in a completely off-grid setting, this could be a drawback. The OGO™ Compost Toilet is a strong contender for eco-conscious users seeking a convenient, easy-to-maintain composting toilet solution for compact living arrangements.

The Modiwell Smart Dry Flush Toilet is a compact, portable waterless toilet designed especially for RVs, camping, tiny homes, and similar uses where traditional plumbing isn’t available. Weighing only 17 pounds and with a footprint of 16"x16"x11", it’s easy to carry and fits small spaces well. Instead of composting, it uses a self-contained dry-flush system that seals waste in bags automatically with a single button press, which makes it very user-friendly and eliminates odors effectively. This system also prevents liquid leaks by using coagulant pouches, which helps keep mess and smell under control.

It supports users up to 350 pounds thanks to sturdy stainless steel legs, making it stable and comfortable for adults. The built-in rechargeable battery can last for 70–100 uses per charge, so it doesn’t need a constant power source, which is great for off-grid situations. Since it uses disposable bags, you have to manage waste bags regularly, which can add ongoing costs and environmental considerations compared to composting toilets that recycle waste on-site. There is no active ventilation system, but the sealed bags and coagulants work well to control odor.

Because it’s a dry-flush model rather than a traditional composting toilet, it doesn’t perform liquid and solid waste separation or compost waste internally. That makes it simpler to maintain but might not suit users looking for a fully self-contained composting solution. This toilet provides an easy, odorless, and portable option for people needing a waterless toilet without complex upkeep, best suited for camping, travel, or temporary setups rather than full-time composting.

The Nature's Head Self Contained Composting Toilet is designed for those seeking an efficient and odor-free solution for waste management. One of its standout strengths is its large capacity; it can serve two people full-time, allowing for easy emptying every 4-6 weeks, which is quite practical for households or camping situations. The installation process is also user-friendly, making it accessible for individuals who are reasonably handy around the house. Plus, the manufacturer's commitment to customer service ensures support if needed, which can be reassuring for first-time users.

The design of the toilet, specifically the Close Quarters Spider Handle, is another plus, as it aims to optimize space without compromising functionality. Users will appreciate that the product claims to maintain zero odor, which is a common concern with composting toilets. This can make a significant difference in comfort and hygiene, particularly in small living spaces or off-grid setups.

There are some considerations to keep in mind. While the installation is straightforward for those with basic skills, it may still pose a challenge for individuals who are not handy. The plastic material, while lightweight, might not appeal to everyone’s aesthetic preferences compared to more traditional toilet designs. Additionally, while the toilet can handle waste effectively, regular maintenance is still necessary, such as ensuring the composting process is optimal, which some users may find daunting.