Best Portable Toilets for Truck Drivers

After researching dozens of portable toilets designed for the unique demands of long-haul trucking, we evaluated each model based on manufacturer specifications, published industry standards for waste capacity and odor control, and aggregated owner feedback from verified buyers. Our comparison focuses on real-world factors: tank size, flush mechanism durability, ease of emptying, and stability in a moving cab. We found that no single toilet is perfect for every driver, so we highlight the strengths and weaknesses of each pick to help you choose the right fit for your rig.

1. Dometic 97220 5 Gallon Portable Toilet: Best Overall

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In our evaluation, the Dometic 97220 stands out for its balanced combination of capacity, durability, and ease of use. The 5-gallon waste tank is among the largest in its class, meaning you can go longer between dumps. The bellows flush is simple and effective, and the rotating nozzle ensures no residue is left behind. Owner feedback consistently praises its sturdy build and reliable seal, which keeps odors contained even after several days of use in a warm truck cab.

However, the Dometic is not the lightest option, and its freshwater tank fill port is small enough to cause splashing. Drivers who need to empty and refill frequently may find this mildly inconvenient. If you prioritize maximum capacity and solid odor control and don’t mind the extra weight, this is a top choice. But if you have limited space or need something lighter for frequent moves, consider a smaller model.

• Large 5-gallon waste tank reduces frequency of emptying, ideal for multi-day trips.
• Bellows flush system with rotating discharge nozzle provides thorough bowl cleaning with minimal water.
• Sturdy ABS construction and sealed valve prevent leaks and odors when properly maintained.

Pros: Excellent odor control with tight-sealing slide valve.; Wide, stable base fits securely in truck cab corners.
Cons: Heavier than some competitors at 11 pounds empty.; Freshwater tank fill opening is small, making refilling a bit slow.

2. Thetford Corp 92860 Porta Potti Curve: Runner Up

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The Thetford Porta Potti Curve earned strong marks in our research for its easy to use design and comfortable ergonomics. The curved shape fits naturally in the cab and provides good back support, which is appreciated during longer sits. The level indicator is a practical feature that helps you avoid overfilling. Based on owner feedback, the toilet is easy to clean and maintain, and the seal does a solid job containing odors when the unit is not in use.

That said, the 2.6-gallon waste tank is significantly smaller than the Dometic’s, meaning you’ll need to empty it more often. The flush pump on some units can be stiff out of the box. If you are a solo driver who makes frequent stops and values comfort and a lighter weight, this is a great option. But if you want to maximize time between empties, the Dometic is a better fit.

• Ergonomic curved design allows for a more comfortable seating position in tight spaces.
• Easy-to-read level indicator on waste tank prevents overfilling and messy surprises.
• Durable polyethylene construction with a smooth exterior for easy cleaning.

Pros: Comfortable seat height and shape for extended sitting.; Lightweight at 8 pounds empty, easy to carry and store.
Cons: Smaller waste tank requires more frequent emptying.; Flush pump can be stiff initially and may require some effort.

3. Camco 41545 5.3 Gallon Portable Toilet: Best Capacity

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For drivers who prioritize maximum waste capacity, the Camco 41545 is a strong contender. Its 5.3-gallon waste tank is the largest we found, and owner feedback indicates it lives up to the promise of fewer dump stops. The piston flush is powerful and generally reliable, though some users report that it can clog if you’re not careful with paper. The integrated handle and relatively light weight make it easier to carry to a dump station than you might expect.

However, the freshwater tank is only 2.5 gallons, which means you may run out of flush water before the waste tank is full. This can be a minor annoyance on longer trips. Also, the flush mechanism’s susceptibility to clogs means you need to use RV-safe toilet paper. If you are diligent about paper use and want the largest tank possible, this is a solid choice. But if you prefer a more balanced tank ratio, the Dometic is better.

• Largest waste tank in this comparison at 5.3 gallons, minimizing emptying frequency.
• Piston flush delivers a powerful stream for effective bowl cleaning.
• Integrated handle and lightweight design (9.5 lb empty) for easy transport.

Pros: Excellent value for the capacity offered.; Stable base with non-slip feet stays put during travel.
Cons: Freshwater tank is relatively small, may need refilling before waste tank is full.; Flush mechanism can be prone to clogging if too much toilet paper is used.

4. SereneLife SLTOILET20 Portable Toilet: Budget Pick

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The SereneLife SLTOILET20 is the most budget-friendly option we evaluated. It offers a battery-powered flush and separate tanks that make emptying straightforward. Its compact dimensions are a plus for drivers with limited cab space. Owner feedback often highlights the value for the price and the convenience of the automatic flush.

However, durability is a concern. Several reviews mention cracks developing in the plastic after a few months of use, and the odor seal is not as reliable as on pricier models. If you are on a tight budget and only need a toilet for occasional emergency use, this may suffice. But for regular daily use, we recommend investing in a sturdier model like the Dometic or Thetford.

• Battery-powered flush (requires 4 AA batteries) provides hands-free operation.
• Detachable fresh and waste water tanks for easy emptying and cleaning.
• Compact size fits in tight spaces, ideal for smaller truck cabs.

Pros: Very affordable compared to other models.; Battery flush is convenient for those with limited hand strength.
Cons: Plastic construction feels less durable; some owners report cracks after a few months.; Odor seal is less effective; some users notice smells even when closed.

5. Reliance Products Luggable Loo: Simple & Light

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The Reliance Luggable Loo is the simplest solution we looked at. It is essentially a sturdy lid with a seat that fits onto a standard 5-gallon bucket. This makes it very lightweight and easy to store when not in use. Owner feedback praises its no-fuss design and low cost. It is a popular choice for emergency kits and occasional use.

However, it lacks a flush system and odor control features. You must use a bucket liner or add chemicals to manage smells, and cleaning is more hands-on. The bucket itself can be unstable if not placed on a flat surface. This is not ideal for regular use in a moving truck. If you need a backup toilet for emergencies or are camping, it works. But for daily driving, a flush model is far more hygienic.

• Simple bucket-and-lid design with no moving parts to break.
• Uses standard 5-gallon bucket (not included) which can be replaced easily.
• Lightweight at just 2.5 pounds (lid only), very portable.

Pros: Extremely affordable and easy to replace parts.; Can be used with a snap-on toilet seat for added comfort.
Cons: No flush mechanism; requires manual cleaning and odor management.; Not as stable as dedicated portable toilets; can tip if not secured.

6. TOTO SW3046#01 Portable Toilet: Compact Design

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The TOTO SW3046#01 is designed for drivers with very limited space. Its compact dimensions and low weight make it easy to stow away when not in use. The hand pump flush is smooth and quiet, and the removable waste tank simplifies cleaning. Owner feedback generally appreciates its build quality and ease of maintenance.

However, the small tank capacities (2.8 waste, 2.0 fresh) mean you will be emptying and refilling often, possibly daily on long hauls. The seat height is lower, which could be a drawback for taller individuals. This toilet is best for short trips or as a secondary unit. For full-time use, a larger model is more practical.

• Compact and lightweight (7.5 lb empty) for easy storage in small cabs.
• Hand pump flush with a comfortable lever action.
• Smooth surface and removable tank for thorough cleaning.

Pros: Small footprint fits in tight spaces like behind a seat.; Flush mechanism is quiet and requires minimal effort.
Cons: Small tanks require frequent emptying and refilling.; Seat height is lower than average, which may be uncomfortable for taller drivers.

7. Cleanwaste Go Anywhere Portable Toilet Kit: Disposable Bag System

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The Cleanwaste Go Anywhere is a unique bag-based system that completely eliminates the need for a waste tank. It folds into a compact package and uses special waste bags with a gelling powder to contain liquids and solids. This is a great emergency option or for very occasional use. Owner feedback highlights its convenience for short trips and the fact that no cleaning is required.

However, the bags have a limited capacity and can leak if you exceed the fill line. The seat itself is less stable than a traditional portable toilet, and it is not designed for repeated daily use. If you need a reliable toilet for regular trucking, skip this. But as a backup or for day trips, it works.

• Folds flat for easy storage; comes with waste bags and powder gel.
• No water or chemicals needed; waste bags can be disposed of in trash.
• Lightweight at 2.2 pounds, ultra-portable.

Pros: No messy tank cleaning; bag-and-toss system is very convenient.; Compact and easy to carry as a backup.
Cons: Not suitable for heavy or frequent use; bags can leak if overloaded.; Seat stability is lower than tank-style toilets; may wobble.

Frequently Asked Questions

What size portable toilet is best for a truck cab?

For most truck cabs, a toilet with a waste tank between 3 and 5 gallons offers a good balance of capacity and footprint. Measure your available space before buying. Compact models (around 14×14 inches) fit in many cabs, but larger tanks up to 5.3 gallons require more floor space. Consider how often you can empty it on your route.

How do I control odor in a portable toilet?

Use RV-specific toilet chemicals (formaldehyde-free or enzyme-based) in the waste tank to break down waste and control smells. Always keep the waste valve closed when not in use, and empty the tank regularly. Some models have better seals than others; reading owner reviews can help you choose one with reliable odor containment.

Can I use regular toilet paper in a portable toilet?

It is best to use RV-safe or biodegradable toilet paper that dissolves quickly. Regular toilet paper can clog the flush mechanism or create a sludge that is hard to empty. Many portable toilet manuals recommend only using paper labeled as septic-safe or RV-safe.

How often do I need to empty a portable toilet?

This depends on tank size and usage. A 5-gallon waste tank typically lasts 3-5 days for one person with moderate use. Smaller tanks (2.5-3 gallons) may need emptying every 1-2 days. Always empty before the tank is full to avoid spills and odors. Some models have level indicators to help you monitor.

Are portable toilets stable in a moving truck?

Most portable toilets have a wide base and non-slip feet to stay put during travel. However, it is a good idea to secure the toilet with bungee cords or place it in a corner where it cannot slide. Models with a low center of gravity are more stable. Avoid using a bucket-style toilet without securing it.

Our Verdict

After thorough research, the Dometic 97220 5 Gallon Portable Toilet is our top pick due to its large capacity, reliable odor control, and durable construction. For those who prefer a lighter, more ergonomic design, the Thetford Porta Potti Curve is an excellent runner-up. Choose based on your space, frequency of use, and how often you are willing to empty the tank.

Video Guide

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