If you haven't already you may wish to read The Humanure Handbook by Joe Jenkins. It outlines a practical diy composting toilet system that is low-odor and sanitary when maintained properly.

[–] Retro_unlimited@lemmy.world 2 points 3 days ago

I have that book in storage, soon after septic is installed I plan to get my stuff here, need the tools to build.

We have been planning on a composting toilet in the house.

The septic will be used for the kitchen sink (it’s considered black water here) but everything else can be used for plants if we use safe soaps for the liquids and compost the solids long enough.