You would have to have some place to dump the contents of the bucket. The composting doesn't really start until you get the stuff into a compost pile.
We have an electric composting toilet (a compromise - dh wanted a flush toilet, I wanted a bucket) & even tho it evaporates most of the liquid, it still has to be composted outside. This winter we have been putting it in a trash can outside the back door (couldn't get to our usual dump spot because of snow) & it isn't full to the top yet. That's with 3 of us using it. I think a bucket system would take up more space.
