Does a waterless urinal smell?

Question

Accepted Answer

With a closed container and a clean hose, the Pi-Pi waterless urinal does not smell: urine immediately flows into the container and does not stagnate, while ventilation helps in enclosed spaces. Odor appears where liquid stagnates, so its cause is usually easy to find with a short checklist.

Where does the odor come from

The cause is usually one of these points:

liquid stagnates in a sagging hose;
the container is open or the hose lies freely in a wide neck;
there is residue on the bowl or filter screen;
the room is enclosed and not ventilated.

Therefore, a container with a lid, a hose without sags, and rinsing as needed are important. If an odor has recently appeared in the building, start with the container and hose: they are most often the cause.

Ventilation: when needed and how to connect

Standard Plus and Standard Corner have a Ø70 mm port on top. It connects to the standard ventilation of a composting toilet or a ventilation duct, so in an enclosed garden house, allotment shed, or motorhome, odors have a way to escape. The instructions show a variant with a vertical duct routed outside. The model with a closed top (Standard) is designed for spaces where extraction is not needed.

If an odor appears: what to check

Is the container closed and is the hose tightly fitted into the neck.
Are there any sags in the hose where liquid stands, and are there any kinks.
Does the container need to be emptied and rinsed.
Is the filter screen clean and is there any residue in the bowl.
Is ventilation connected to the port, if your model has one.

Canister and hose

How often to empty the canister depends on its volume and the number of users. When you pour out the contents, rinse the canister and hose. A clean container and hose are the main conditions for a room not to smell. The procedure is described in the container emptying answer.

In an enclosed garden house, motorhome, and next to a dry toilet

Next to a dry or composting toilet, the urinal works as a complement: urine goes separately, so the toilet fills up more slowly and stays drier. In a tight enclosed space, choose a model with a Ø70 mm port and connect it to ventilation. Daily maintenance is described in the urinal maintenance answer.