S1 Dry Flush toilet · 12V hardwired versionPush a button.
Never see it again.
$1,500.00USD · taxes calculated at checkout
A sealing toilet that only seals what it has to. Every #2 gets heat-sealed in its own bag. #1 goes to a separate bottle. No black tank, no dump station, no composting.
★ 4.7 from S1 owners · “Coming from the black tank work, this is a much easier and cleaner option for boondocking.”
Pre-order now, ships late November.
- Never see, touch or smell your #2s
- Only #2s get sealed. Urine goes in a bottle
- Waterless: no black tank, chemicals or water
- The only dry flush toilet that separates urine
- 2-year warranty, 30-day returns
Dry flush RV toilet · Version
What’s included
- S1 Dry Flush Sealing Toilet
- Sealing unit
- Solids bin
- Electronics box with power cable for wiring into your 12V system
- 2 high barrier bag liners
- Bag pusher
- Urine bottle with one-way valve
- Manual
NOTE: Not all items ship together. Some assembly required.
Technical specs
- Dimensions (D×W×H): 17.0″ × 15.2″ × 16.5″
- Weight: approx. 29 lbs / 13.2 kg
- Solids container: holds 1–2 uses
- Urine bottle: 1.7 gallon / 6.5 liter
- Power requirements: 12V 1.5A, 18W supply
- Material: ABS plastic body, stainless steel hinges
For the most up-to-date information, please refer to the manual.
How do you power it?
What do I need? A 12V power connection in your van or RV. Hardwire it into your vehicle’s 12V system with the supplied cable and a 10A fuse close to the power source.
How much power? About 0.95 Wh per seal. Your fridge uses more.
Not 24V, not a wall socket.
Not sure your setup’s up to it? Send us a photo and we’ll tell you.
Delivery & returns
- Free shipping on orders over $150 in the lower 48 states and Canada.
- USA orders ship with UPS Ground
- No PO boxes.
- Canadian orders ship from our 3PL in Canada.
Changed your mind?
Send it back unused, in its original packaging, within 30 days for a refund. Return shipping comes out of your refund. We’ll send you a prepaid label, so there’s nothing to pay up front. Read the returns policy
Manuals & guides
Never see it, touch it or smell it.
One button heat-seals each #2 in a high-barrier bag. When the bin’s full, lift out the sealed packs and easily dispose of them. Simple, clean, hygienic
“So much easier to avoid the stinkies than the ole ‘bucket’ style competition.”
Don’t pay to pee.
Other dry flush toilets charge you for every visit, #1 included.
The S1 sends urine to a bottle and only seals what needs to be sealed, the #2s. This means up to 80% fewer bags.
Less plastic in the trash. More money in your pocket.
Never plan a trip around a dump station again.
Done it before? You know the queue, the hose, the splashback, and the trip cut short because the tank was full.
Never had a black tank? Good. Keep it that way. No tank, no blue chemicals, no water. Empty the urine bottle where local rules allow and stay put longer.
Simple once it’s set up.
No coir, no layering, no composting. Learn the routine once, then it’s sit, push, walk away.
“The convenience of it is remarkable, once it’s set up it just works perfectly.” — Paul S.
You’ll never be without a toilet.
Life happens. Things break, refills get delayed. Lift the sealer out, line the bin with a bag, and the S1 keeps working as a separating toilet.
Super simple
Four steps.
Urine flows to the front into the urine bottle. Solids drop into a liner in the solids bin.
Push the button and the sealer does the rest, in about 3–5 minutes. Each #2 is sealed in its own bag.
The indicator tells you when the 1.7-gallon bottle is full. The bottle is opaque — discreet to carry and empty.
One liner roll is about 20–25 flushes. Empty the solids bin every 1–2 uses, and drop in a fresh roll when it runs out.
The numbers
Specifications
at a glance
- S1 Dry Flush Sealing Toilet
- Sealing unit
- Solids bin
- Electronics box with power cable for wiring into your 12V system
- 2 high barrier bag liners
- Bag pusher
- Urine bottle with one-way valve
- Manual
- NOTE: Not all items ship together. Some assembly required.
Two versions
Which S1 is
right for you?
Go with the S1 12V if the toilet has a permanent home in your build and you have a 12V house system to wire it into. There’s no battery, so there’s nothing to charge.
The S1 with its own battery is for moving it around, or for builds without a 12V system.
Side by side
Other dry flush toilets wrap every visit, #1 included. The S1 sends #1 to a bottle and only seals #2s.
Straight answers only
Common
questions
What is a dry flush toilet?
A waterless toilet that seals waste in a bag instead of flushing it away with water. No black tank, no plumbing, no dump station.
How does the S1 dry flush toilet work?
Urine goes to a separate bottle. Push the button and the S1 heat-seals the #2 in its own bag. The bin holds 1–2 uses.
S1 vs the Laveo dry flush toilet: what’s the difference?
Laveo twists every visit into a cartridge, #1 included, at about $2 a use. The S1 only seals #2s, at about 70¢ each, and urine is free.
What do refills cost?
About 70¢ per #2. One liner roll does 20–25 seals. #1 costs nothing.
Why does sealing take 3–5 minutes?
Our bags are thicker, higher-barrier plastic that holds smell in better. Worth the wait. Sometimes sealed packs stay linked together; keep scissors handy.
How do I empty the S1?
When the solids bin is full (1–2 uses), lift out the sealed packs and put them in your regular household trash. That’s fine in most places, but check your local rules. Empty the urine bottle where local rules allow; a light tells you when it’s full.
How is the S1 different from other dry-flush toilets?
Traditional dry-flush toilets bag every single use — liquid and solid together. You burn through expensive proprietary refills fast, and you’re effectively paying to seal urine in plastic.
The S1 diverts liquid into a separate 1.7-gallon bottle and only seals solids. That’s up to 80% less bag use, dramatically lower running costs, and far less plastic waste. It’s the first dry-flush toilet with urine diversion built in.
How often does the liner need changing?
Each liner roll gives about 20–25 flushes. For 2 people with regular use, that’s roughly every 1–2 weeks. Swap takes under a minute — no tools, no mess. Refills are available on CompoCloset.com and Amazon Prime.
How often does the urine bottle need emptying?
The urine bottle holds 1.7 gallons. For two people you will empty it every 1–2 days. The urine indicator light tells you when.
Already have a Cuddy or Cuddy Lite?
Good news — you don’t need to buy the full S1. The S1 Dry Flush Adapter Kit converts your existing Cuddy or Cuddy Lite into a sealing toilet. Plug-and-play, no permanent modifications required.
What happens if I run out of bag liner refills on the road?
The S1 has a built-in backup mode — it converts to a standard urine-diverting toilet if you run out of bag liners. You’re never left without a working toilet.
The other way
Already own a Cuddy
or Cuddy Lite?
The S1 Dry Flush Adapter Kit retrofits the sealing mechanism to the toilet you already have. Same footprint, same seat — new trick.
Time to 💩 or get off the pot
Your black tank called.
It’s not coming.
2-year warranty · free shipping to the continental US & Canada over $150
