Why Choose the CompoCloset S1 Dry Flush Toilet?

  • Waterless and chemical free: perfect for van life, cabins, boats, tiny homes and more.
  • Seals solids only with the push of a button. No smells, no fuss.
  • Urine diverting design means less bagging (empty liquids bottle only when full). 
  • Easy to maintain with a compact footprint and low-profile design.
  • Eco-friendlier option: skip the chemical goo and avoid water waste.
Heat-sealed S1 Dry Flush portable toilet by Compo Closet Australia, compact and hygienic urination device for outdoor use.

S1 Dry Flush Sealing Toilet

The S1 redefines off-grid hygiene with its advanced, battery-powered, heat sealing system.

Unlike traditional dry flush toilets, the S1's urine diverter keeps solid and liquid waste completely separate, odour free, and out of sight. 

It is the World's first separating sealing toilet, allowing you to bag and seal solids only, saving you money by reducing bag use.

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Compact toilet with a white cover inside a small enclosed space.

Why is the S1 Dry Flush Sealing Toilet Special?

  • The world’s only urine-diverting dry flush sealing toilet
  • Keeps mixed raw sewage out of general waste, helping reduce landfill
  • No coagulants, absorption liners, bottle inserts, or chemical additives required
  • Urine-diverting design reduces bag usage and ongoing consumables
  • Only solids remain sealed until disposal for convenient waste management
Dry Flush Adapter Kit - S1

Convert your Cuddy or Cuddy Lite!

Already own a Cuddy or Cuddy Lite? Good news! You can easily upgrade your existing toilet into an S1 Dry Flush Sealing Toilet with the S1 Dry Flush Adapter Kit. (available soon in Australia)

The kit includes the S1 sealing mechanism, solids bin, battery pack, control panel with housing, power connector, and power cable (power adapter not included), giving you everything needed to convert your setup to push-button dry flush sealing technology.

Coming Soon Learn More
Portable S1 Dry Flush toilet by Compo Closet Australia featuring compact design and modern urination device for convenient outdoor use.

Separate

A built-in urine diverter separates liquid waste from solid waste. Less plastic, less $$

Heat-sealed S1 Dry Flush portable toilet by Compo Closet Australia, compact and hygienic urination device for outdoor use.

Heat Seal

With the push of a button the automatic sealing mechanism hygienically seals solid waste

Top view of Compo Closet Australia's solids bin without agitator, showing the clean, rectangular design for waste collection.

Hassle Free Disposal

The S1 seals each #2 in a small bag, making it easier to empty whenever you want.

Compact toilet with a white cover inside a small enclosed space.

Who Uses Dry Flush Toilets?

Dry flush toilets like the S1 Dry Flush Sealing Toilet are ideal for caravans, motorhomes, vanlife, cabins, boats, tiny homes, and other off-grid setups.

Designed for simple operation and easy cleaning, the S1 is water-free and uses an advanced sealing system to instantly lock away solid waste and control odours.

Its innovative urine-diverting design separates liquids from solids, reducing bag usage and helping keep mixed human waste out of general rubbish.

S1 Dry Flush

What Makes the S1 Dry Flush Toilet Stand Out

The S1 is not just another dry flush toilet, it’s the world’s first urine-diverting dry flush sealing toilet, designed to keep waste management cleaner, drier, and virtually odour-free.

Unlike traditional systems that rely on chemical powders or absorbents to control moisture and smells, the S1 needs none of it. No powders, no chemicals, and no extra fuss.

Its innovative separation and sealing system diverts liquids away from solids, then seals solid waste only at the push of a button.

No mixing. No mess. No unnecessary consumables. Just a cleaner, simpler, smarter toilet for off-grid living.

FAQs

What are the dimensions and capacities of our toilets?

The Cuddy, Cuddy Lite and S1 are all the same size.

422mm (H) x 385mm (W) x 432mm (D)

Solids Bin Capacity: 14.7 Litres

Liquids Bottle Capacity: 6.5 Litres

Note: The 422mm height is at the centre of the plastic lid, it bows up from the edges of the Cuddy where the height is 415mm. With the bamboo lid the height is 418mm from edge to edge.

Our hinges open within themselves allowing for the toilet to be mounted flush against a wall, saving you space.

As Cuddy's agitator is on the front you don't need to leave space on each side either, saving you more space!

Does a dry flush toilet smell?

No, not when well designed—like the S1. The sealing or separating mechanisms prevent odors from escaping.


How is it different to a Composting toilet?
  • Composting starts the composting process so we gain the benefits of no odour, no chemicals, reduced volume and significant time between emptying
  • Dry flush toilets seal waste for regular disposal
How do I dispose of the bagged matter?

Always follow your local waste disposal guidelines. Sealed waste from the S1 is handled similarly to common sanitary waste products such as nappies, adult incontinence products, and pet waste that are routinely disposed of in general rubbish.

Still have a question?

Drop us a message or join our Facebook group. We're always happy to talk about composting toilets with you!

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