I tried one of those two-stage toilets.  The "flush" feature is a joke, and the waste container awkward and difficult to empty, and hard to clean.  Stumbled across this http://www.relianceproducts.com/products/sanitation/92.html and have never looked back.  The simplicity of it, coupled with the easy to dump/easy to clean feature, and the low price (less than $20) made it the ideal solution in my case.  YMMV.

Ellen
Lola, '85 Vanagon ASI
Coee, Traveling Cat

�Be Content with what you have; rejoice in the way things are. When you 
realize there is nothing lacking, the whole world belongs to you.� ~Lao Tzu

> Date: Tue, 16 Aug 2011 12:09:42 -0700
> From: camping.elliott@GMAIL.COM
> Subject: Re: poo powder and related
> To: vanagon@GERRY.VANAGON.COM
> 
> Just FYI, I've stopped using the bucket with liner and absorbent
> materials (kitty litter, etc.) for a couple reasons.
> 
> 1. I change out the bags every couple days because they just get nasty.
> So thar I am, a few bags of doo-doo in a second 5-gal bucket at the end
> of the trip. And no matter how well sealed, it's kinda stinky, and the
> aroma permeates the plastic of the bucket, creating a lingering memory
> of dumps of days past. ("Hmmm . . . that was good chili!")
> 
> 2. Once home, I am not in the least comfortable tossing the bags into
> the trash. It ain't right. Although I'm certain that folk toss their
> disposable baby diapers there all day long.
> 
> So I switched over to a Dometic commode. It's heavier than a bucket, but
> pretty darn stink-leak-proof and the contents, being septic system grade
> toilet paper, dumpage, and black water tank deodorant, are easier to
> dispose of down the toilet. A bit at a time so as not to choke the
> system, and care must be taken to avoid splashage.
> 
> It's a  bit clumsy, and the commode, having an upper tank with "flush"
> water in it and a lower tank filling up with waste products, is a bit
> heavy and sloshy, but in terms of disposal and stinkage, it's a solution
> I'm happier with.
> 
> --
> Jack "Rocket j Squirrel" Elliott
> Bend, Ore.
> 1984 Westfalia. A poor but proud people.
> 1971 "Ladybug"-brand utility trailer ca. 1972 from a defunct company in
> San Clemente, Calif., now repurposed as The Westrailia.
> 
> Sent from my kitchen.
> 
> On 08/16/2011 11:15 AM, Dave Mcneely wrote:
> > left off the link.  Here it is:
> >
> > http://www.cleanwaste.com/
> >
> > ---- Dave Mcneely<mcneely4@COX.NET>  wrote:
> >> Some time back Rocket J. Squirrel asked about toilet related matters.  He and
> >> others among us have used a bucket with liner and various absorbent materials.
> >> Disposal is a problem, as such materials are not supposed to go into land fills
> >> (just as soiled diapers are not).
> >>
> >> Has anyone used any of the products listed on this web site, and if so, how
> >> satisfied have you been?  What was good or bad about them?  I have tried to find
> >> out more about the absorbent material (poo powder), which is sold separately so
> >> that one could not buy the company's bags, just use it with cheaper bags from
> >> another source.  The MSDS is very vague about what the stuff is, other than a
> >> "polymer."   Guess I'll see if I can learn more about diapers -- same stuff I
> >> think.
> >>
> >> The company claims the products and the waste they contain can be safely
> >> disposed in the "normal trash," stating that they are "approved" for such
> >> disposal.   Hmmmm........... .  anyone know any more about that?
> >>
> >> mcneely
> >>
> >> David McNeely
> >
> > --
> > David McNeely