FAQ – Common Questions about the Dry Toilet and More!

In short: Yes! This is one of the most common questions – and completely understandable.

With all BioTioo models, including the version with the stirring mechanism, you can easily put regular household toilet paper into the toilet.

The stirring mechanism automatically shreds the paper as it turns – this ensures everything is evenly mixed and optimally supports the composting process.

So you don’t have to separate anything, dispose of paper separately, or use special paper. Just put it in.

One thing upfront: No, it does not stink 😉 In a separating toilet, urine and feces do not come into contact with each other. This reliably prevents the formation of unpleasant odors. For it is only through the contact of urine and feces that certain enzymes become active, producing the notorious “outhouse smell” of days gone by. With a dry separating toilet, no flushing is necessary. Dry feces do not smell, and the urine tank is reliably sealed by a mechanical odor trap (this is only available with BioTioo). After use, the urine basin can simply be cleaned with a spray bottle and a very small amount of water – done.

Inside the BioTioo there are two containers. The front canister collects the urine. In the rear container there is a granulate made from natural coconut fibres. These biodegradable fibres have the property of absorbing a great deal of moisture and then releasing this moisture only gradually. To "flush" after the "big business," the crank attached to the side of the toilet is turned 2-3 times. This immediately covers the faeces with the coconut fibres. This prevents unpleasant odours from rising, as the faeces are completely wrapped in the coconut fibres, and it also begins to dry immediately. In the urine section of a dry separation toilet, flushing is normally not done. The reason: contact of urine with cold water causes urine scale to form. Lime dissolved in the water and other dissolved substances combine with the urine and uric acid as a catalyst to form a lime-magnesium compound insoluble in water. However, urine scale deposits can be removed with a mixture of water and vinegar or vinegar essence. This mixture can also be used to clean the urine basin after using the toilet or in the evening, without urine scale forming.

No, ordinary household toilet paper can be used. Cleaning without paper using water is also no problem. However, since this introduces more moisture into the coconut granules, the blower should then run continuously to ventilate.

Yes, absolutely. The casing of the BioTioo is already prepared for fixed installation in motorhomes, caravans, boats, or tiny houses: There are prepared fastening points on the back of the casing and on the bottom to screw the BioTioo to the wall or floor. To comfortably reach the two locks between the toilet bowl and the casing during wall mounting, a slim fastening kit is in preparation. Since the disposal of the urine tank and the solid waste container is conveniently done upwards, no service hatch is needed in the outer wall. By the way: The solid waste container can be easily lifted out upwards, while the casing remains as a unit in the vehicle. With competitors, the toilet must be disassembled each time to empty the solid waste container. And then the toilet bowl has to be placed somewhere in the vehicle somehow…

With a dry separation toilet, a distinction must be made between emptying the urine tank and the solid waste container. The BioTioo urine tank has a usable volume of 9.9 litres. An adult produces on average 1.5 litres daily. This results in an emptying interval of about 6.5 days when used by one person. For two people, the urine tank must be emptied after 3 days. This also matches practical experience. The solid waste container has a usable volume of about 12 litres. Through the drying process combined with the stirring mechanism, the excretions are strongly compressed. Since faeces contain up to 80 percent water, the solid waste container must, based on experience, be emptied after about 14 days when used by two people. Because the faeces do not smell at all after drying, the solid waste container only actually needs to be emptied when it is full. With occasional use, the dry faeces can remain in the coconut granulate. There is then no reason for emptying. (a crucial difference to the usual chemical toilet!!!)