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Composting Toilets
by Trelino®

Be free and independent
Find your perfect solution
Discover our broad range of portable toilets

We provide a solution for everyone - no matter how many space you have, how many people using the toilet and where the toilet should be placed.

Top customer questions

A composting toilet consists of a body, a lid and a toilet seat. Its inner parts include two containers and a separator insert. This separates liquid from solid and thus forms the heart of the toilet. The aim is to keep the big business as dry as possible. To this purpose, the urine is diverted to the front into a canister. To prevent leakage and odors, the lid of the canister has a special membrane. The solid waste ends up in a separate container lined with a garbage bag. Here you can also throw the toilet paper. To enhance the drying process, sprinkle the big business with bedding material after going to the toilet. Drying prevents the formation of bacteria, which are responsible for the usual odor. For emptying, you can remove both containers separately from each other.

We use compostable bags or completely recycled plastic bags for the solid waste bin. Both types are reinforced and non-transparent. Basically, you can use any bag, but make sure the material is strong enough and take into account the size of the solids container.

As a litter material for drying the solids, we recommend natural materials such as very fine sawdust, small animal litter, coconut bricks or our litter, the Duftblocker with activated carbon. The Duftlbocker can be used to generate very high-quality soil that is perfect for fertilizing your own garden.
Tip: We do not recommend cat litter. The granules become very heavy, can develop their own odor and are often chemically contaminated. Alternatively, just try it with dried coffee 😉.

Emptying the bag is as easy as using it: You can empty the liquid in any toilet that is connected to the sewage system, whether at the rest area or the toilet blocks at the campsite. You can dispose of the bag with the solids in the residual waste or put the contents in the composter.

All of our separating inserts have a special coating and thus support the drainage. For cleaning, we recommend that you mix vinegar (or vinegar essence) with water and pour it into a small spray bottle. This way, the mixture can be easily applied to the separator insert and the individual containers and wiped off. In particular, never rinse the urine canister with pure water, as the combination of urine with pure water promotes urine scale.
Tip: Since urine can develop its own odor due to nutrition, we recommend that you add a few drops of vinegar essence to the canister in advance to prevent the odor and the formation of urine scale. 🙂

You still have a chemical toilet installed? No problem! Our composting toilets can replace these without restriction. The pre-installed chemical toilets are usually only screwed to the back wall and floor and the water drain must be closed. If you do not have the confidence to do the conversion yourself, we will be happy to help you and provide you with the addresses of our experienced installation partners. Please feel free to contact us. 🙂
Tip: You want to be able to remove your Trelino® flexibly? Then use velcro or strong magnets to secure the composting toilet while driving, but also to be able to use it as a stool outside, for example.

Our Trelino® principle

We want to avoid unnecessary complexity and offer a range of compact, robust and visually appealing toilets. All Trelinos are very easy to use and to clean and come up with a comfortable seating feeling.

This is how a Trelino® works

It can be as simple as this:

  • The separating insert is the core piece and separates solids from liquids.
  • Then you put litter over the solids to dry them, which then no longer stink.
  • In its pure form, urine is also odourless. By not using water, no urine scale is formed.
Most important purchase criteria

Answering the following points will help you to find your perfect toilet:

  • Space requirement and weight
  • Material and water resistance
  • Length of the emptying cycles
  • Comfort requirement
  • High quality design

Be part of the Trelino® community and enjoy a new lifestyle

Our customers already rely on their Trelino® - no matter if they use the toilet for their car, van, motorhome, tinyhouse, boat, garden or for their favorite leisure activity (e.g fishing).

We have a great team that is available every day to answer your questions about the toilet or installation and will be happy to advise you.

Just write us an email at

Entsorgung bei Trenntoilette


No installation, ready to use wherever you are
Timber L weiß in Wohnwagen


Clear and discreet design for smallest spaces
Duftblocker bei Trenntoilette


Easy to handle, simple disposal.
We are a local company from Duesseldorf
From campers for nature lovers

We want to give everyone the freedom to go to the toilet when you have to - without any compromise.

A toilet does not have to look like a toilet, nor does it have to be complicated or consume water. We would like to offer you a new solution that supports you in everything from use to cleaning and leaves you more time for the really nice things in life! ❤️

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