Biggest problem with my composting toilet isn't really with the toilet, but with the maintenance person (me).
For example, today I emptied the bag but it was FAR overdue. It was frozen solid and that was good, but the bag was bulging so much that I had difficulty getting it out of the stone box it sits in and past the hinged lid and the overflowing magazine rack without snagging the bag. Then as I was lugging the heavy load to the compost bin I realized that some fool (me again) had neglected to shovel the snow off the path and I got snow inside my boots.
But the frozen crap sure rolled out of the bag nicely in one big solid lump so all's well that ends well.
So do we have any other problems with the humanure system?