How does a composting toilet work in an RV?
Compost toilets for RVs separate liquid (urine) and solid waste (poo). The solids go into a storage chamber with organic matter, such as coco coir, to help start the composting process, and the liquids go into a container with a liquid capacity of a gallon or more. Separating liquids from solid matter is the key to ensuring your composting toilet does not smell.
If your toilet has an agitator like the Cuddy composting toilet, you rotate the agitator after each use to mix the solids with the organic matter to start the decomposition process. This helps break down the solids so your solids bin doesn't fill up as quickly.
If you use a portable composting toilet like the Cuddy Lite, you add a hand full or so of compost medium to the bin after each "deposit." You will have to empty your waste bin more often, but the overall process remains the same, and you still won't have any odor!