Best RV Composting Toilet: 8 Options Compared

#1 · Best Overall

1. OGO Origin

• Weight: 28 lb
• Material: Polypropylene High Density Polyethylene
• Seat Material: Polypropylene (PP)

Best for: Tight van and boat builds.

Why it ranks #1: Its 15-by-16-inch footprint targets tight RV builds, and the 12V fan and push-button agitator suit owners who can provide electrical power.

A 15-by-16-inch footprint lets the OGO Origin fit tight van, RV, and boat bathrooms without a bulky side crank taking up room. Its push-button 12V agitator also removes the need to turn a handle manually, making it a compact option for buyers who want powered solids mixing.

The urine-diverting trap door sends liquids to a front bottle while keeping solids dry, a separation intended to help control odor. A quiet 12V fan vents the unit, and the fan draws about 0.48 amps a day, a detail that supports planning for a modest solar setup. The push-button agitator mixes solids with composting medium without manual cranking. At 15 by 16 inches, the floor-mounted toilet suits compact builds, though installation still needs floor space and power.

Skip it if you need a fully off-grid toilet with no electrical connection; the OGO NOMAD operates without power, plumbing, or chemicals.

Choose the OGO Origin for a compact van, RV, or boat bathroom where a powered agitator and 12V ventilation suit the setup. Its floor-mounted installation and electrical needs make it a less suitable choice for a power-free portable toilet.

Listed on Amazon as: OGO Origin Compact Composting Toilet – 15in Footprint for Van, RV & Boat

#2 · Highest Capacity

2. Nature's Head Spider Handle

• Dimensions: 20.98"D x 19.02"W x 20.98"H
• Weight: 28 lb
• Material: Plastic
• Seat Material: Plastic

Best for: Extended-use couples.

Why it ranks #2: The listing claims two full-time users can go four to six weeks between emptying, making this larger 20.98-inch-deep unit suited to extended RV use.

Nature’s Head states that two people using this toilet full time can go four to six weeks between emptying, enabling longer intervals for couples. Its close-quarters spider handle design addresses a specific installation layout, while the manufacturer also describes emptying as a five-minute task.

The stated four-to-six-week emptying interval for two full-time users is the key planning detail for buyers seeking fewer waste-handling cycles. Nature’s Head also describes emptying as taking five minutes, which may simplify the routine when service is due. The close-quarters spider handle design is identified in the product name for installations where handle clearance matters. At 20.98 inches deep, 19.02 inches wide, and 20.98 inches high, the unit needs more room than compact portable models.

Skip it if you have a very small van bathroom; the 15-by-16-inch OGO Origin has a more compact listed footprint.

Nature’s Head fits couples who want a self-contained toilet with a stated four-to-six-week emptying interval and can allocate a larger installation space. Its dimensions make it less appropriate for tight van bathrooms or highly portable use.

Listed on Amazon as: Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design

#3 · Flexible Installation

3. Compo Closet Cuddy Lite

• Dimensions: 17"D x 15.2"W x 16.5"H
• Weight: 12.3 kg
• Material: Plastic: ABS
• Seat Material: Plastic

Best for: Flexible RV placement.

Why it ranks #3: Its RV-focused design offers flush-fit or freestanding placement, a liquid-diverting drop zone, and a 12V power cable for vehicle installation.

Flush-fit or freestanding installation gives the Compo Closet Cuddy Lite flexibility in tight RV, campervan, boat, and tiny-house layouts. Its liquid-diverting two-plate drop zone separates liquids and solids, while the extra-large opening is intended to help users place waste accurately and reduce splashes.

The 17-by-15.2-inch footprint supports placement in compact interiors, while the choice of flush-fit or freestanding installation gives buyers options for arranging the bathroom. Its two-plate drop zone separates liquids and solids, and the extra-large opening is intended to support cleaner, more accurate use. The included 12V cable wires to a van’s electrical supply, so the listed setup calls for an electrical connection. A carbon filter is also included as part of the supplied components.

Skip it if you need operation without an electrical connection; the OGO NOMAD works without power, plumbing, or chemicals.

The Cuddy Lite suits RV and campervan owners who want flexible placement and a separated drop zone. Its 12V cable is intended for wiring to a van supply, so it is not the right match for users seeking a power-free setup.

Listed on Amazon as: Cuddy Lite Portable Compost Toilet – for Camping, RVs, Campervans, Boats & Tiny Houses – LED Full Indicator, Liquid-Diverting, Separating, Solids Cover, Easy Clean – Portable & Compact

#4 · Best No-Power Option

4. OGO NOMAD

• Dimensions: 15.4"D x 13"W x 12.38"H
• Weight: 12 lb
• Material: Polypropylene (PP)
• Seat Material: Polypropylene (PP)

Best for: Power-free portable setups.

Why it ranks #4: This 12-pound portable toilet needs no electricity, plumbing, or chemicals, fitting RV users who prioritize off-grid flexibility over a fixed installation.

The OGO NOMAD needs no power, plumbing, or chemicals, enabling toilet use at primitive campsites, in truck campers, and aboard boats without utility connections. At 12 pounds and 15.4 by 13 by 12.38 inches, it is a portable option for setups where carrying and stowing the unit matter.

Its self-contained, off-grid operation means buyers can use it without arranging an electrical connection or plumbing. The compact 15.4-by-13-inch footprint and 12-pound weight support carrying it between a truck camper, campsite, or boat. The package includes two compostable bags, a bag of coco coir, and a cleaning spray bottle, providing listed accessories for initial use and cleaning. The supplied specifications do not list container capacities, so buyers prioritizing a known interval between emptying should weigh that information gap.

Skip it if you need a listed liquid and solids container capacity; the TROBOLO WandaGO specifies 1.2- and 1.7-gallon containers.

The NOMAD suits campers, boaters, and other users who need a portable toilet for locations without power or plumbing. Its supplied specifications do not state container capacities, so it is a weaker fit when planning emptying intervals is essential.

Listed on Amazon as: OGO NOMAD Self-Contained Composting Toilet – Urine-Diverting, Portable RV

#5

5. Separett Villa

• Dimensions: 26.5"D x 18"W x 21.3"H
• Weight: 34 lb
• Material: Paper
• Seat Material: Polyvinyl Chloride (PVC)

Best for: Waterless residential installations.

Why it ranks #5: Its waterless, urine-separating system and high-capacity design suit extended off-grid use, though its 26.5-inch depth demands substantial RV floor space.

Waterless urine separation lets the Separett Villa operate without plumbing or additives, enabling use in off-grid homes, cabins, and remote locations. Its high-capacity construction is intended for extended use between emptying cycles, while its 26.5-inch depth and 34-pound weight point to a more substantial installation.

The urine-separating system keeps operation waterless and requires no additives or mixing, making it relevant for locations without conventional plumbing. Separett describes the Villa as high-capacity and suitable for extended use between emptying cycles, though no container volume is specified here. Its 26.5-inch depth, 18-inch width, and 21.3-inch height call for a dedicated space, and its 34-pound weight is a practical consideration during installation. The listing notes that local rules may regulate waterless toilets.

Skip it if you need a lightweight toilet for portable camping; the 10.4-pound TROBOLO WandaGO is listed for mobile use and campervan storage.

The Villa suits buyers planning a waterless toilet for a cabin, off-grid home, or other fixed remote setting. Its size and weight call for dedicated installation space, and waterless-toilet use may be subject to local rules.

Listed on Amazon as: Separett Villa Urine-Separating Compost Toilet

#6

6. TRELINO Evo S

• Dimensions: 15.4"D x 13"W x 11.7"H
• Weight: 3.9 kg
• Material: Plastic
• Seat Material: Acrylonitrile Butadiene Styrene (ABS)

Best for: Compact tent and van trips.

Why it ranks #6: The compact 15.4-by-13-by-11.7-inch body and separate 1.2-gallon urine and 1.6-gallon solids containers suit small mobile interiors.

At just 11.7 inches high, the TRELINO Evo S can fit into compact spaces such as a van, tent, or car, enabling portable use where vertical room is limited. Its separation and drying function is intended to prevent odor formation without water or chemicals.

The Evo S measures 15.4 inches deep, 13 inches wide, and 11.7 inches high, dimensions that suit buyers weighing storage room in a vehicle or tent. Its separator separates liquid and solid waste, while the listed 1.2-gallon urine container and 1.6-gallon solids container clarify capacity for planning. The package includes ten bags and two lids for the urine canister, including one with a membrane closure. Operation avoids water and chemicals, so users do not need those supplies.

Skip it if you need a larger listed liquid container; the TROBOLO WandaGO lists a 1.2-gallon liquid container as well, so consider a high-capacity unit such as Separett Villa.

The Evo S suits campers and van travelers who value a low-profile toilet with separate containers and no water or chemicals. Its 1.2-gallon urine capacity is a relevant boundary for buyers planning longer stretches between emptying.

Listed on Amazon as: TRELINO Composting Toilet Evo S White, Portable Toilet for Camping & Outdoor, Odorless, 1.2 gal & 1.6 gal Capacity, 13 x 15.4 x 11.7 inches

#7 · Adjustable Seat

7. TROBOLO WandaGO

• Dimensions: 15"D x 13.4"W x 12.4"H
• Weight: 10 lb
• Material: Plastic
• Seat Material: Polypropylene (PP)

Best for: Adjustable-seat campervan use.

Why it ranks #7: At about 10 pounds, it is easy to move and stores compactly; its seat adjusts between 12 and 17.2 inches for varied users.

A seat that adjusts between 12 and 17.2 inches gives the TROBOLO WandaGO two seating heights, letting users adapt it to different settings. Its 10.4-pound weight and compact dimensions also make it practical to stow in many campervan storage compartments when the toilet is not in use.

The WandaGO measures 12.4 inches high, 15 inches deep, and 13.4 inches wide, and its stacking function helps reduce the storage space it requires when closed. The adjustable seat offers 12- or 17.2-inch heights, giving buyers a choice of seating position. Separate 1.2-gallon liquid and 1.7-gallon solids containers make the waste streams distinct. Its listed 330.7-pound support rating provides a concrete load limit to consider when choosing a portable toilet.

Skip it if you need a larger listed liquid container; the TRELINO Evo S has a 1.2-gallon urine container too, so consider a high-capacity unit such as Separett Villa.

Choose the WandaGO for campervan trips where compact storage and two seat-height options are useful. Its separate containers and stated dimensions aid planning, but its 1.2-gallon liquid capacity may not suit buyers prioritizing longer intervals between emptying.

Listed on Amazon as: TROBOLO WandaGO Composting Toilet, Portable Outdoor Camping Toilet, Urine Diverting Dry Toilet With Height Adjustment

#8

8. Thinktank Waterless Toilet

• Dimensions: 23.2"D x 18"W x 19"H
• Weight: 30 lb
• Material: Plastic
• Seat Material: Plastic

Best for: Ventilated, bag-based use.

Why it ranks #8: Its separate air intake and exhaust pipes and waste-bag system are distinctive, but the listing does not specifically establish RV suitability or composting.

Separate air-intake and exhaust pipes let the Thinktank draw ventilation from outside while remaining virtually airtight under normal operating conditions, enabling a different approach to air movement. Its waste is contained in a bag behind a patented trap door, keeping it hidden from users during normal use.

The separate intake and exhaust pipes support outside ventilation, and the product description says the toilet does not lose heated or cooled air. Its bag-based waste containment and patented trap door keep waste hidden from users, while the listing describes a bowl-free design as easy to clean. The package includes two 16-inch vent pipes and a wall adapter, so installation involves routing ventilation. At 23.2 inches deep, 18 inches wide, and 19 inches high, it needs a dedicated footprint.

Skip it if you need a compact toilet to stow in a campervan; the 10.4-pound TROBOLO WandaGO is listed for storage in many campervan compartments.

The Thinktank suits buyers seeking a ventilated, bag-based waterless toilet with waste hidden behind a trap door. Its listed dimensions and vent-pipe installation call for dedicated space and a suitable route for ventilation.

Listed on Amazon as: Thinktank Waterless Toilet White