Lazy Daze Owners' Group

Welcome aboard.  The only bad questions are the ones unasked, as I learned.   I had a cartridge toilet on a sailboat once, and the Laveo seems to be a replacement for that.  Aside from the the difficulties I see in disposal,  the refills seem to cost a bit more than $20/each Laveo refills.
Morro Bay charged $10 to use their dump station in March; tank wasn't full after a week but we were leaving.

It's hard to see any reason to use this product in a Lazy Daze.

The Laveo is similar to a Porta Potti, only instead of a removable cassette that can be carried to a dump station and emptied with no mess, you wind up with a bag of semiliquid urine and feces, plus a large, rigid plastic ring. Laveo doesn't say how many flushes you can expect to get from one of their single-use cartridges, but from what I can see in their product videos, it looks like maybe three or four gallons. That won't last even a single person for very long. A Twin/King has an 18-gallon black tank; that's four or five times the capacity of the Laveo cartridge.

Moreover, the disposable Laveo cartridge is seriously bulky (see the installation video to get an idea), and costs $25 per cartridge. I can't imagine storing more than a couple of spares in an RV the size of a Twin/King, and the cost of replacements is going to add up fast.

Then there's the disposal issue. While Laveo points out that it's not illegal to dispose of human waste (e.g., diapers), all the landfills I've been to specify "no liquids"--and that bag of urine and feces is going to be very liquid indeed. What happens when the landfill compacts trash, as some do? Even if they don't, what happens when someone throws a sharp-cornered object into the dumpster on top of that bag? It's going to be a very unpleasant mess.

So what situation would be suitable for a toilet like the Laveo? As others have said, a cabin, tent, van, or tiny trailer with no holding tanks. But in that case,  I'd recommend a Porta Potti instead of the Laveo product. The Porta Potti cassette holds three to six gallons (depending upon the model) and is easy to empty at any RV dump station, or even into a public toilet. No single-use supplies need to be stockpiled. I used a Porta Potti model 335 in my 13-foot Trillium trailer, and it was fine. And a Porta Potti costs less than $150, while the Laveo toilet costs a thousand bucks.

But in a Lazy Daze with a built-in toilet and an 18-gallon black tank, I wouldn't use either a Porta Potti or Laveo toilet. Even if the rig came with a broken toilet, that's only $200 to $300 to replace. And the advantages of much longer use between dumps and zero cost for disposable supplies are compelling.

After all, as Larry pointed out, it's not as if a "waterless" toilet is going to mean you never have to visit a dump station. You'll still have to do that to empty your 25-gallon gray tank.

So the question remains: why?