General questions

The inner workings of a composting toilet essentially consist of three parts: separator, urine canister and solids container. The separator leads the urine into the canister, while the solids end up in a bucket with a compost bag. More about the function of a composting toilet

The correct sitting position is crucial for the best possible function of a composting toilet. For anatomical reasons, this differs for women and men.Further information on the seat position

For us, sustainability and environmental awareness don't end with disposal - we think beyond the garbage can. Our solid bags are made from 100% post-consumer recycled material (LDPE). This makes them a top-notch recycled product whose carbon footprint is significantly lower than that of standard bags made from virgin material. Alternatively, we also offer you solid bags made from renewable, organic materials that can be easily composted.

Trelino® is a quality product designed to last. A high-quality composting toilet that will accompany you for many years and makes a statement against the throwaway culture. In addition, Trelino® combines optimal functionality, ease of use and high comfort behind a unique design.

We are always at trade shows. Come by and meet us in person. We usually have a large selection of our Trelinos® on display.
Click here for the overview


A fan counteracts condensation, accelerates the drying process of the solids and ensures that fragrances quickly dissolve into thin air. This makes it particularly suitable for long emptying cycles or if your Trelino® is used by several people. Due to its compact dimensions and short emptying cycles, the Trelino® S does not need a fan.

Diarrhea is not a problem when using a composting toilet. Just use more litter to compensate for the liquid.

Urine can easily be disposed of in a toilet connected to the sewer system. Diluted, it is also suitable as fertilizer for the home garden or the raised bed on the balcony. The bag with the solids is a case for the residual waste garbage can. Conditionally, composting is also possible. The urine canister and solids container can be emptied independently of each other.

There are a variety of different sprinkles. We primarily recommend our scent blocker, as this is optimized for composting toilets. The moisture is well extracted and released. In addition, it improves odors that arise due to its composition.
Alternatively, you can also use small animal litter or bark mulch. There are still numerous alternatives that our customers use.

If you use conventional wet wipes, these must not be placed in the solids container due to the wetting effect and you must dispose of them separately. However, to enable you to feel clean downstairs even with a separation toilet, we offer a sustainable foam alternative that can be conveniently used on any toilet paper and added to the solids bin. Look here

Sanitary products should be disposed of separately, as the products do not degrade themselves and they could rewet the dried solids.


Cleaning a composting toilet is as simple as its use. The household remedy diluted citric acid or vinegar has proven its worth. Tips for cleaning can be found here

The urine canister should be rinsed out with vinegar or citric acid (can also be used diluted) after every, every second emptying. To do this, allow the acetic or citric acid to act for a while and shake. This will loosen any deposits.

You should also clean the solids tank regularly. The effective microorganisms are well suited for this purpose. Spray the solids container with it, close it for a certain time and let the effective microorganisms do the work. You can also use other cleaners to clean the solids tank.


You can clean your composting toilet with Effective Microorganisms. They remove all urine residues and odors from your composting toilet.
For wooden composting toilets, you can leave the effective microorganisms to work in the absence of air. For example, you can simply put the containers back on top and let the EMs work overnight. Afterwards, make sure that the composting toilet dries out well before you use it again.

The solids tank of your composting toilet will smell if the waste cannot dry well. Therefore, drying must be optimized. Try using either more litter or different litter. With this you can already achieve significant differences. However, to significantly improve the air circulation, the use of a fan would be recommended. This transports the moist warm air outside, so that everything can dry well.

If you notice an odor coming from the urine canister, it is probably urine scale. The use of table vinegar, which you can leave to soak in for a longer period of time, will remove the deposits. Sometimes a stubborn deposit requires several applications. In the future, prevent urine scale by filling the urine canister with a little vinegar or lemon solution after every, or at the latest after every second, emptying of the urine. Let the solution soak in and shake vigorously once so that all deposits can dissolve.

Care tips

Please make sure that you ventilate your wood separation toilet regularly to prevent moisture from accumulating in it. Wood as a natural material can react to persistent humidity. If urine or water does get into it, make sure it dries out before using it again. Effective microorganisms can also be used to treat urine spills.

We recommend leaving the separation toilet open when not in use for a longer period of time, so that moist air cannot accumulate in it. Persistent moisture, even in the form of humidity, can lead to mold over time.


Everything you want to know about returns can be found here in the revocation policy

The entire returns process can take up to 10 days. As a rule, however, the refund will be issued immediately after receipt of your return.