Frequently Asked Questions


What is an Uritonnoir?

We face to two environmental problems :
– the excessive use of drinkable water with the toilets’s water flush.
– the impossibility to use the mud purification (coming from the purification plants) in the fields for agricultural production.
It is prohibited to use this mixture of urines with other pollutants (silvents, painting, eavy metals…) who have been blended during the travel in the sever’s network

Then, a dry urinal, is an independent collecting system who valorises urines directly maintaining good agronomic quality.

Uritonnoir, french noun.
This term refers to a sanitation facility to allow urination in a standing position.

An Uritonnoir is a hybrid of two everyday products, an urinal and a funnel (literally in french, “urinoir” et “entonnoir”).
This system is used either in public spaces during festive events (slotted into round bales) or in private gardens (slotted into small straw bales).
L’Uritonnoir is a utensil to fill a volume of straw (carbon) with urine (nitrogen) in order to compost it over 6-12 months period and convert it into humus.

Why a dry urinal ?

A dry urinal is a tool who use the mix straw (carbon)/urine (nitrogen), the increase of temperature, the bacterium and the soil microfauna to transform our externalities in compost.

The Uritonnoir contributes to a localy-based market garden production without fossil origin fertilizer.

Where can we install Uritonnoirs?

For individual use: in your garden!
For a shared use: family gathering, sport-event, festivals or campsite.

Why a plastic Uritonnoir ?

Uritonnoirs are made in polypropylene, souple plastic made to absorb shocks and avoid to break in case of fall.

The polypropylene offers a sustainable solution. The Uritonnoirs can be reused after cleaning.

How to built the uritonnoir ?

Simplicity of the assembly, economic solution, easy to set up,  the polypropylene Uritonnoir is delivered flat composed of two folding parts joined with tongues.

Please follow the picture bellow:


Which height do i install the Uritonnoir ?

Prepare the hole to fit the Uritonnoir. Adjust the height depending on the users height.
Fit the Uritonnoir with the triangular drain into the bale so the vertical part of the Uritonnoir is against the bale.

To secure the Uritonnoir to the bale by feeding the strap through the two slots at the top of the Uritonnoir and then secure the strap to the bale.

Why doesn't a well managed uritonnoir smell?

– Urine which remains in contact with the straw means amoniac and smell reduction.
Then it is important to adapt the quantity of Uritonnoirs and Straw Bales to the number of visitors.
We count a maximum of 60 users per Uritonnoirs for 2-3 days to limit the risk of smell.
– It is better to maximise the number of Uritonnoirs on a bale to distribute urine all over the straw. Then, it is good to place 1 Uritonnoir per straw linear meter.
– It is advisable to install Uritonnoirs in the shade.

For an individual use

How can i combine straw bales?

We can stack straw bales to create a straw wall  :


How can i install l'Uritonnoir in straw?

Setup for kids (Straw block : 80x35x45cm) 1-1-001

Setup for 1 adult (Straw block : 80x35x45cm) 1-2-001

Setup for 2 adults (Straw block : 80x35x45cm) 1-3-001

Setup for 4 adults (botte de paille : 80x35x45cm) 1-4-001

For a collective use

How to reduce the risk of vandalism?

Risk of  the straw bale strap being cut
Solution : Strap the bale with a wire or synthetic/metallic ribbon

Fire risk
Solution : Humidify bales when weather is dry or provide a water extinguisher and a human presence.

Risk of theft
Uritonnoirs can be taken off.
Solution : Fix the Uritonnoir at the top and the bottom with a wire

How to define the quantity of Uritonnoirs?


How to combine bales to create intimity?

Severals solutions are possible to create intimity
It depends on the nature of bales you use. Round Bale (Cylindrical), Big Bale (parallelepiped straw bundle)

Installations for 3-4-5-6 Adults (Round Baler : H1.20m variable Diametre)

Combination 3-6-12 Adults (Round Baler : H1.20m Diametre1.20m)

Installation for 6 Childs  (Big Baler : L200 x H80 x L50)

Combinations for  6 Adults (Big Baler : L200 x H120 x L80)


Combinations for  3-6-12 Adults (Big Baler : L200 x H120 x L80)