Naio wrote:
.
A composting toilet used to be something that did the composting itself. Meaning it would hold several years worth of poop.
When was this?
Composting (toilet or otherwise) shouldn't take anywhere close to years. If it's taking years, it's not composting.
Full timing, you will have the last few deposits uncomposted but if operating normally, no odor and looks like rich soil right after mixing. On ours, you could slip a garbage bag over the top, flip it and never come into contact with the contents.
If you are not using it full time, let it sit for a week or two and no visible remnants. Great for your flowerbeds.