I have a motor home, with a porcelain toilet, holding tanks, and the whole nine yards. In the summer, you flush out the fresh tanks, getting out the antifreeze, refiling the water tanks. Then all summer long you refill tanks, empty grey and black tanks, and in the fall, you antifreeze everything again.
Royal Pain in the ...
On my boat, the last thing I want is more chores. So no water anywhere. No plumbed fresh, no grey and no black water, and no antifreeze to mess with. (maybe a little in the hold just in case)
My potti will work more like a cat box than a toilet. Cat litter (one company calls it pooh powder) to absorb moisture if needed, all going directly into double sacked liners, that also gets placed in a plastic sack till a disposal opportunity. I want to keep it simple.
Why do you folks mess with heads using water?

http://www.youtube.com/watch?v=Nf6mZtDh ... r_embedded
When you are through using it for the weekend, place it in a plastic sack, add some water and a little Clorox, and shake it for several minutes. Rinse it off with a hose or a little lake water, and the whole unit is clean as new again. Folds up to the size of a briefcase. Can be used as a small dining table.



