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Key Takeaways
- Top picks are distinguished by durability, ease of installation, and compatibility with various toilet types.
- Adjustable urine diverters tend to offer better flexibility but often come at a higher price or complexity.
- Simpler, single-piece designs are more straightforward but may lack fine-tuning options or durability for heavy use.
- DIY kits provide customization but require some technical skill and maintenance attention.
- Cost-effective options often trade off some durability or advanced features for lower prices.
| urinediverting insert kit | Material |
|---|---|
| Xastro Upgraded Large Composti | Mirror-finish ABS plastic |
| Upgraded Large Composting Toil | ABS plastic with mirror finish |
| Composting Toilet Urine Divert | ABS plastic |
| Composting Toilet Urine Divert | ABS plastic |
| Frienta Urine Diverter for Com | ABS plastic |
| Separett Privy Urine-Separatin | — |
| Composting Toilet Urine Divert | ABS plastic |
| Xastro Complete Composting Toi | Mirror-Finish ABS |
| Composting Toilet Insert & Uri | PETG |
| TROBOLO Composting Toilet Inse | — |
| Upgraded Large Composting Toil | ABS plastic |
More Details on Our Top Picks
Xastro Upgraded Large Composting Toilet Urine Diverter DIY Kit
This DIY urine diverter kit stands out for its versatility, allowing you to craft a personalized composting toilet tailored to your space and height needs. Made from durable, mirror-finish ABS plastic, it offers a large opening for user comfort, surpassing smaller, standard diverters like the Composting Toilet Urine Diverter. While it requires drilling for installation—a task that might challenge some—it provides all necessary accessories, making it a cost-effective solution for off-grid and indoor setups. The large opening enhances comfort, and the sturdy material ensures longevity, but the need for a separate toilet seat adds an extra step and expense. Compared with pre-made units, this kit offers customization at a lower cost, though installation complexity is a tradeoff.
Pros:- Allows full customization for specific space and height needs
- Made from durable, easy-to-clean mirror-finish ABS plastic
- Includes all essential parts for a complete DIY build
Cons:- Requires drilling for installation, which may be difficult for some users
- Toilet seat not included, requiring a separate purchase
Best for: DIY enthusiasts seeking a customizable, durable solution for off-grid or indoor composting toilets.
Not ideal for: Users who prefer ready-to-use systems with minimal installation or those uncomfortable with drilling and customization.
- Material:Mirror-finish ABS plastic
- Opening Dimensions:365mm x 276mm
- Includes:Urine Diverter, Metal Filter Screen, Discharge Hose
- Note:Toilet seat not included; requires drilling
Our verdict“Best suited for DIYers who want a robust, customizable urine diverter with flexibility for unique setups.”
Upgraded Large Composting Toilet Urine Diverter DIY Kit, Complete Wrap-Around Urine Separator with Stainless Steel Sink Lid, Drain Hose and Cutout Sticker, ABS Material fits Composting Toilet, RV,Boat
This comprehensive kit excels in providing a large, comfortable diverter with an extra-wide 365×276mm opening, making it ideal for larger users and heavy-duty applications like RVs, boats, or pet facilities. Compared to the Composting Toilet Urine Diverter – Wrap-Around, it features reinforced edges for greater durability and a sleek, non-stick mirror finish that simplifies cleaning and maintenance. The included cutting guide sticker makes installation straightforward, even for DIY novices. While it offers a complete package with a discharge hose and metal filter, its size and shape may not fit all toilet setups and it’s primarily designed for permanent or semi-permanent installations. Its robust build and detailed accessories justify a slightly higher complexity and cost, but it’s a solid upgrade for busy environments.
Pros:- Extra-large, ergonomic opening for comfort and hygiene
- High-quality, non-stick mirror-finish ABS plastic for easy cleaning
- Comes with a precise cutting guide for easy DIY installation
- Reinforced edges for added durability
Cons:- Size may be incompatible with some existing toilets or setups
- Installation requires careful cutting and fitting, which might be challenging
Best for: Households or facilities needing a heavy-use, hygienic, easy-to-clean urine diverter for larger composting setups.
Not ideal for: Those seeking a compact, portable option or with limited space for larger diverters.
- Material:ABS plastic with mirror finish
- Opening Dimensions:365×276mm
- Includes:Diverter, filter screen, discharge hose, cutting guide
- Design:Reinforced edges for stability
Our verdict“Ideal for users who prioritize durability, hygiene, and a large comfortable opening in permanent or semi-permanent composting toilets.”
Composting Toilet Urine Diverter – Adjustable Urine Separator for DIY Dry & Bucket Toilets
This adjustable urine diverter offers a straightforward solution for small-scale DIY composting setups like RVs, boats, and off-grid cabins. Its simple ABS plastic design makes it easy to wipe clean, and the adjustable feature helps it fit various toilet configurations. It’s a practical choice for seated use, but its limited compatibility means it’s less suitable for larger or non-standard toilets, as seen with more specialized products like the Wrap-Around Urine Separator. While its 10-year guarantee suggests durability, some users report issues with fit or sealing, and it’s not designed for high-traffic environments. It’s a reliable, budget-friendly option for those with specific, adjustable needs but less suited for heavy or varied use cases.
Pros:- Adjustable to fit multiple toilet configurations
- Made from durable, wipeable ABS plastic
- Easy to install and clean
Cons:- Designed only for seated use, limiting flexibility
- Some users experience fit or sealing issues
Best for: DIY enthusiasts with small or variable toilet setups seeking an adjustable, easy-to-maintain diverter.
Not ideal for: Users with larger or non-seated toilets, or those requiring a permanent, heavy-duty solution.
- Material:ABS plastic
- Weight:9.6 ounces
- Dimensions:11.81 x 6.69 x 6.3 inches
- Guarantee:10-year
Our verdict“Best for small-scale, adjustable DIY projects where ease of installation and maintenance are priorities.”
Composting Toilet Urine Diverter – Wrap-Around Urine Separator for DIY & Bucket Toilets
This wrap-around urine diverter provides full coverage for reliable separation, fitting standard 5-gallon buckets and making it ideal for off-grid or DIY projects like campervans and cabins. Its durable ABS plastic construction ensures odor-free operation and easy cleaning, similar to the Upgraded Large Diverter, but with a more compact, straightforward design. While the full wrap-around cover enhances odor control and containment, it’s primarily suited for seated users and may not fit all bucket sizes beyond 5 gallons. Its simplicity and durability make it a solid choice for those building or upgrading basic composting toilets, though it lacks advanced features or customization options found in more complex kits.
Pros:- Full wrap-around coverage for odor control
- Fits standard 5-gallon buckets easily
- Made from durable, easy-to-clean ABS plastic
Cons:- Primarily designed for seated use, limiting versatility
- Limited to specific bucket sizes, less adaptable
Best for: DIY builders and campers needing a reliable, full-coverage diverter for standard 5-gallon buckets.
Not ideal for: Users requiring a diverter for larger or non-standard toilet designs or for non-seated use.
- Material:ABS plastic
- Fits:5-gallon buckets
- Color:Black
- Guarantee:10 years
Our verdict“Perfect for basic DIY or camping setups with standard bucket sizes and seated users.”
Frienta Urine Diverter for Composting Toilet, Solid Liquid Separator
The Frienta urine diverter emphasizes durability and simplicity, making it a versatile choice for off-grid, camping, and DIY composting toilet projects. Its solid-liquid separation design with a stainless steel sink lid offers effective separation, comparable to other durable options like the Wrap-Around Diverter. Its straightforward ABS plastic build makes it easy to install and clean, though lack of detailed compatibility information with various toilet models limits its immediate applicability. The relatively compact size (13.5 x 11.4 inches) provides flexibility for many setups, but this may pose challenges for larger or more complex systems. Overall, this diverter balances durability with ease of use, fitting well into various off-grid or temporary composting arrangements.
Pros:- Durable ABS plastic construction for long-lasting use
- Effective solid-liquid separation with a stainless steel lid
- Easy to install and suitable for diverse DIY applications
Cons:- Limited information on compatibility with different toilet models
- Design may not fit all setups or larger toilets
Best for: Off-grid users and DIYers needing a durable, simple separator compatible with various small setups.
Not ideal for: Users seeking a highly adjustable or integrated system, or those with larger, built-in toilets.
- Material:ABS plastic
- Dimensions:13.5 x 11.4 inches
- Weight:1.17 pounds
- Design:Solid-liquid separator with stainless steel lid
Our verdict“A solid, durable choice for off-grid and DIY users seeking reliable separation with straightforward installation.”
Separett Privy Urine-Separating Toilet Seat Kit, Blue Bowl
The Separett Privy is an excellent choice for those looking to convert existing latrines into a urine-diverting system without relying on electricity. It stands out for its simplicity and effectiveness in odor reduction, making it ideal for cabins, sheds, or remote cabins where power access is limited. Compared to the Xastro Complete Composting Toilet Kit, it offers a more straightforward, non-electric setup but requires proper venting for optimal airflow. Its installation is generally straightforward but might be challenging for absolute beginners, especially in ensuring proper venting. The folding seat enhances comfort and airflow, making it a practical choice for long-term off-grid use. The main tradeoff is its limited application scope—it’s designed specifically for off-grid latrine conversions, not portable or small-scale setups. Overall, this kit suits users seeking a reliable, odor-reducing solution in remote locations where electricity isn’t available.Pros:- Reduces odor and decomposition effectively with urine diversion
- Easy to install below existing latrine platforms
- Operates without electricity, ideal for off-grid locations
- Includes a folding seat for added comfort and ventilation
Cons:- Requires proper venting for optimal airflow, which can complicate installation
- Installation may be complex for inexperienced users
- Limited to specific off-grid use cases and not portable
Best for: Individuals building off-grid or remote latrines, cabins, or sheds needing a non-electric, odor-control urine diverter.
Not ideal for: Urban homeowners or those needing portable or small-scale solutions, as it requires proper venting and installation space.
- Brand Name:Separett
- Number of Items:1
- Model Number:1121-03
- Hinged Lid:Yes
- Non-Electric:Yes
- Use Case:DIY compost toilet builds, cabins, sheds, off-grid settings
- Color:Blue
Our verdict“This kit is perfect for off-grid setups where reliable, non-electric urine diversion and odor control are priorities.”
Composting Toilet Urine Diverter – Adjustable Urine Separator for DIY Dry & Bucket Toilets | Fits Camper Vans, RVs, Boats & Off-Grid Cabins | Easy-Clean ABS, Made in Wales
This adjustable urine diverter is designed for versatility in DIY composting toilet projects, making it a strong contender for van life, RVs, and boat owners. Unlike the Separett kit, it emphasizes adaptability with adjustable fittings, allowing it to fit various toilet configurations. Its durable ABS construction makes cleaning straightforward, and the absence of electricity or chemicals simplifies maintenance. However, compared to the Xastro Complete Kit, it offers less in terms of comprehensive setup, requiring users to source additional components for full assembly. Its primarily seated-use design limits its usefulness for standing urination, which could be a drawback for some users. The 10-year warranty underscores its durability but also suggests that long-term reliability depends heavily on proper installation and maintenance. This product makes the most sense for DIYers needing a flexible, chemical-free urine-separating solution in mobile or off-grid setups.Pros:- Effective odor control by separating urine from solids
- Fully adjustable to fit various toilet setups
- Durable and easy to clean with a wipeable surface
- Ideal for off-grid, van life, and boat applications
Cons:- Designed mainly for seated use, not suited for standing urination
- May need trimming or modifications for certain setups
- Limited to specific applications like composting toilets
Best for: DIY enthusiasts and mobile users seeking a flexible, durable urine diverter for composting or dry toilets.
Not ideal for: Users who need a complete all-in-one toilet kit or standing urination capability, as it is primarily designed for seated use.
- Brand:Free Range Designs
- Item Count:1
- Material:ABS plastic
- Made in:Wales
- Model Number:URINE-SEP-CLASSIC
- Warranty:10 years
Our verdict“This diverter is best suited for DIYers needing a flexible, long-lasting solution for mobile or off-grid composting toilets.”
Xastro Complete Composting Toilet Kit with Urine Diverter & Toilet Seat
The Xastro Complete Composting Toilet Kit offers a comprehensive solution for those seeking an all-in-one DIY setup, including a high-quality urine diverter and comfortable seat. Compared to the Separett kit, it provides a more integrated package that simplifies assembly, especially with its pre-drilled holes and included accessories. Its mirror-finish ABS surface makes cleaning easier, and the large opening enhances user comfort—a plus over smaller, basic diverters like the Free Range Designs model. However, the installation involves cutting and assembly, which could be intimidating for less experienced users. Its versatility makes it suitable for RVs, cabins, or tiny homes, but the pre-drilled holes limit customization. For users prioritizing ease of setup and comfort, this kit is a strong contender but requires some DIY skills.Pros:- All-in-one kit simplifies DIY installation
- Durable mirror-finish ABS surface for easy cleaning
- Large opening increases comfort during use
- Suitable for various off-grid and mobile applications
Cons:- Requires cutting and assembly, which may be challenging
- Pre-drilled holes limit customization options
- Potentially more complex than standalone diverters
Best for: DIYers looking for a complete, ready-to-assemble composting toilet solution with high comfort and durability.
Not ideal for: Users seeking minimal installation or highly customizable setups, as pre-drilled holes limit flexibility.
- Opening Size:365mm x 276mm
- Material:Mirror-Finish ABS
- Includes:Urine Diverter, Toilet Seat, Metal Filter, Discharge Hose, Instructions
- Additional Features:Cutting template, pre-drilled holes
Our verdict“This kit is ideal for users wanting a complete, comfortable, and durable composting toilet setup with minimal hassle.”
Composting Toilet Insert & Urine Diverter
This composting toilet insert paired with a urine diverter emphasizes eco-friendly waste management in off-grid settings. Its simple PETG construction ensures durability and easy installation, especially with the specified hardware. Compared to the other models, it offers a straightforward, minimalistic approach designed for eco-conscious users who prioritize sustainability and sanitation. It’s a good fit for DIY setups that require effective liquid-solid separation but may need additional customization due to its hardware requirements. The hardware dependency could pose a barrier for some users, and its limited size means it might not fit all toilet models. Still, its focus on eco-friendliness makes it appealing for sustainable living enthusiasts.Pros:- Effective waste separation improves composting efficiency
- Easy to install with proper hardware
- Eco-friendly design enhances sanitation
- Durable construction for long-term use
Cons:- Requires specific hardware, increasing setup complexity
- May need customization for different toilet models
- Limited size may not fit all toilet configurations
Best for: Eco-minded individuals seeking a straightforward, environmentally friendly waste separation solution for off-grid or sustainable projects.
Not ideal for: Users needing a plug-and-play, all-in-one solution or those with incompatible hardware setups, since it requires specific installation components.
- Material:PETG
- Installation Requirements:4 M3 heat press inserts and 4 M3 screws
Our verdict“This insert is best for environmentally conscious users who are comfortable with some customization and hardware setup for off-grid composting.”
TROBOLO Composting Toilet Insert, Urine Diverter for DIY Urine-Diverting Toilets, Camping Toilets, and Dry Toilets
The TROBOLO composting toilet insert offers a flexible, easy-to-install option for DIY projects, especially suited for camping, dry toilets, or small off-grid setups. Its size and compatibility with standard seats make it accessible for a variety of configurations, and its design ensures odorless separation without chemicals, water, or electricity. Compared with the Xastro kit, it provides a more adaptable fit and interchangeable parts, but its smaller size may not suit larger users or those with specific seat dimensions. The absence of long-term user reviews means durability is less certain, but its straightforward installation and chemical-free operation make it appealing for temporary or portable setups. It excels for users needing a simple, reliable urine separator for temporary or mobile use.Pros:- Easy to install with flexible mounting options
- Odorless operation without chemicals or water
- Interchangeable parts for long-term durability
- Compatible with standard toilet seats
Cons:- Size may not fit all toilet seat configurations
- Limited long-term durability data available
- Additional components may be needed for full DIY setups
Best for: DIYers and campers seeking an odorless, chemical-free urine-diverting insert for portable or temporary toilets.
Not ideal for: Long-term, large-scale installations or users needing a larger or more permanent setup, as size may be restrictive.
- Dimensions:14.76 x 12.68 x 6.69 inches
- Item Weight:14.1 ounces
- Inner Diameter:12.2 inches longitudinal, 9.5 inches transverse
Our verdict“This insert suits DIY and camping users who need a simple, odorless urine diverter that is quick to install and remove.”
Upgraded Large Composting Toilet Urine Diverter&Toilet Seat DIY Kit, Complete Wrap-Around Urine Separator with Stainless Steel Sink Lid, Drain Hose and Cutout Sticker, ABS Material for Composting Toilet
This diverter kit stands out for its extra-large 365×276mm opening, making it highly comfortable for users with larger physiques and reducing mess during use. Its mirror-finish ABS surface offers a non-stick, easy-to-clean experience that surpasses simpler plastic models, like the Xastro DIY kit, which may have less durable finishes. The included cutting template simplifies installation, allowing for precise fitting without complex measurements—an advantage over less user-friendly options. Compared to the Separett Privy seat, this kit offers more versatility for DIY builds, though it involves some manual cutting and assembly, which could be a drawback for those seeking plug-and-play solutions. The robust, reinforced edges add stability for frequent use, making it suitable for busy environments like pet shops or public restrooms. However, the kit’s DIY nature means installation requires some skill, and the absence of a pre-fitted seat could be a hurdle for beginners. Overall, this product makes the most sense for those wanting a durable, customizable solution for off-grid or high-traffic applications, willing to invest a little effort into installation.
Pros:- Large, comfortable opening for easy use and less mess
- High-quality mirror-finish ABS surface for easy cleaning
- Includes precise cutting template for straightforward DIY installation
- Reinforced edges enhance durability for frequent use
Cons:- Requires manual cutting and assembly, which may be challenging for novices
- No pre-fitted seat included, adding to installation complexity
Best for: Off-grid dwellers, DIY enthusiasts, and high-traffic public restroom setups needing a large, durable, and customizable urine diverter.
Not ideal for: Casual users or small households seeking a quick, no-fuss installation that requires minimal DIY effort.
- Opening size:365×276mm
- Material:ABS plastic
- Finish:Mirror-polished
- Includes:Cutting guide, drain hose, stainless steel sink lid
- Design:Wrap-around
- Application:Composting toilets, RVs, public spaces
Our verdict“This diverter kit is best suited for users who need a durable, customizable, and high-capacity solution willing to handle DIY setup.”

How We Picked
Products were selected based on their design quality, ease of installation, compatibility with common composting and dry toilets, and overall durability. We prioritized kits that serve a range of user needs—from DIY enthusiasts to those seeking plug-and-play solutions. Each product was evaluated for build quality, ease of cleaning, and how well it separates urine from solids. We favored options with clear instructions and proven performance, but also considered tradeoffs such as higher cost or complexity to ensure a balanced overview. This approach helps identify choices suited for different budgets and technical skills, ensuring readers find a kit that fits their specific situation.| urinediverting insert kit | Material |
|---|---|
| Xastro Upgraded Large Composti | Mirror-finish ABS plastic |
| Upgraded Large Composting Toil | ABS plastic with mirror finish |
| Composting Toilet Urine Divert | ABS plastic |
| Composting Toilet Urine Divert | ABS plastic |
| Frienta Urine Diverter for Com | ABS plastic |
| Separett Privy Urine-Separatin | — |
| Composting Toilet Urine Divert | ABS plastic |
| Xastro Complete Composting Toi | Mirror-Finish ABS |
| Composting Toilet Insert & Uri | PETG |
| TROBOLO Composting Toilet Inse | — |
| Upgraded Large Composting Toil | ABS plastic |
Factors to Consider When Choosing Urinediverting Insert Kit
Choosing the right urinediverting insert kit depends on several factors that affect performance, longevity, and ease of use. Understanding these aspects can help prevent buyer’s remorse and ensure you select a product that meets your specific setup and maintenance preferences. Here are key considerations to keep in mind when making your choice:Compatibility with Your Toilet Setup
Not all urine diverters fit every toilet type. Some are designed specifically for composting toilets, while others work with bucket or dry toilets. Measure your toilet opening and check the product specifications carefully to avoid fit issues. Compatibility is vital for proper sealing and to prevent leaks or odors, which can compromise your entire waste management system.Ease of Installation and Maintenance
Some kits come with comprehensive instructions and simple mounting mechanisms, making installation straightforward even for DIY users. Others may require more technical skills or tools. Maintenance also varies—consider how easy it is to clean, replace parts, or access the diverter for regular upkeep. A well-designed diverter saves time and reduces frustration over the long term.Durability and Material Quality
Look for kits made from high-quality, corrosion-resistant materials like stainless steel or durable plastics. Cheaper options may degrade faster, especially with frequent cleaning or exposure to moisture. Investing in a more robust diverter can prevent leaks, cracks, or failure, ultimately saving money and hassle in the long run.Adjustability and Customization
Adjustable diverters offer greater flexibility to optimize waste separation, especially in varying toilet setups or user preferences. However, they tend to be more complex and potentially more expensive. Decide if the extra versatility aligns with your needs or if a simpler, fixed design will suffice.Cost and Overall Value
While budget options are tempting, they often compromise on durability or ease of cleaning. Conversely, premium kits tend to offer better materials and features but at a higher price. Balance your budget with your expected usage and maintenance willingness. Sometimes, paying a bit more upfront results in better performance and longevity.Frequently Asked Questions
Will a urine diverter fit my existing composting toilet?
Most urine diverters are designed with standard sizes, but compatibility can vary based on your specific toilet model. Measure your toilet’s opening and compare it with the diverter’s dimensions before purchasing. Some kits come with adjustable features or universal fittings, which can help, but confirming fit first reduces the risk of installation issues or leaks.How often should I clean or replace the urine diverter?
Regular cleaning depends on usage frequency, but a good rule is to inspect and clean the diverter at least once a month for heavy use. Some models are designed for easy disassembly and cleaning, which simplifies maintenance. Replacement is usually necessary if parts become cracked, corroded, or if sealing performance diminishes over time, typically after several years of service.Are adjustable urine diverters worth the extra cost?
Adjustable diverters offer the advantage of customizing the urine flow, which can improve separation efficiency and reduce odors. However, they tend to be more complex and may require careful setup. If your toilet setup is fixed or if you’re on a tight budget, a fixed diverter may be sufficient. For those who want fine control or anticipate different configurations, the investment in adjustability can pay off.Can I install a urine diverter myself, or do I need professional help?
Many kits are designed for DIY installation, with clear instructions and simple mounting options. Basic plumbing skills and tools are usually enough for a straightforward setup. However, more complex or adjustable diverters might require some mechanical aptitude or additional fittings. If you’re uncomfortable with DIY plumbing, consulting a professional ensures proper installation and reduces the risk of leaks or odors.What tradeoffs should I expect when choosing a budget diverter?
Budget diverters often use cheaper materials, which can lead to faster wear or cracking, especially with frequent cleaning. They might lack adjustability or have less precise sealing, increasing maintenance needs. However, if your use is infrequent or your setup is temporary, a lower-cost option can be a practical choice. Keep in mind that investing a little more may yield a more durable and reliable long-term solution.Conclusion
For most users, the Xastro Upgraded Large Composting Toilet Urine Diverter DIY Kit stands out as the best overall choice thanks to its durability and ease of installation. Budget-conscious buyers may prefer the Frienta Urine Diverter for its solid performance at a lower price. If you seek a simple, plug-and-play solution, the Separett Privy Urine-Separating Toilet Seat Kit offers straightforward setup and maintenance. Those with advanced needs or larger systems should consider premium options with adjustable features and robust materials. Your ideal pick depends on your setup, technical skills, and how much you’re willing to invest for long-term reliability.Fall Picks
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