Last updated: 16/10/2022

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Welcome to our big chemical toilet test 2022. Here we present all the chemical toilets that we have tested in detail. We have compiled detailed background information and added a summary of customer reviews on the internet.

We would like to make your purchase decision easier and help you find the best chemical toilet for you. You will also find answers to frequently asked questions in our guide. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy a chemical toilet.


  • The chemical toilet is a perfect solution for people who often travel, camp or need to use the outdoor toilet.
  • The contents of the cassette toilet can be disposed of in the normal household toilet. Some campsites prohibit emptying into the household toilet, but offer disposal stations for this purpose.
  • The situation is somewhat different with solid-tank toilets. Here, the compact design does not allow a water seal, and the tank is located in a chamber directly under or in the immediate vicinity of the drum.

The Best Chemical Toilet: Our Picks

Guide: Questions you should ask yourself before buying a chemical toilet

Who is a chemical toilet suitable for?

Mobile toilets are suitable for people who travel a lot. They can be used both outdoors and indoors. Campers and travellers can also benefit from chemical toilets by adding chemical toilets to the motorhome. Campers travelling without a professional camper van can also benefit from a camping toilet. For example, you can store your chemical toilet in the boot.

For people who like camping, the chemical toilet is a perfect solution. (Image source: / Patrick Hendry)

How does a chemical toilet work?

A chemical toilet flushes and transports waste like a conventional toilet, but the waste is not transported into a sewer, but into a holding tank below. The tank is located inside the portable toilet unit below the toilet seat. Inside the holding tank are chemicals that break down solid waste, kill germs, destroy odours and reduce toilet paper.

Portable toilet flushing is done either with water that comes from a hidden water tank in the toilet or with the toilet chemicals from the holding tank. This tank holds all waste and liquids, so no mains drainage or water supply is required for standard toilet units. Flushing is done by hand or foot. The pump flush system creates pressure that circulates the water and/or chemicals contained in the tank through a pipe that is transported to the toilet bowl.

Can I rent a chemical toilet?

If you only need a chemical toilet for a one-off occasion, it is advantageous to rent a chemical toilet from different suppliers.

Renting a chemical toilet costs about 120 £ and includes disinfection, rental, final cleaning and, if necessary, delivery and removal. However, this option only makes sense if you are organising a large event, for example, as it will provide you with top-of-the-line models.

What are the alternatives to a chemical toilet?

There are several alternatives to chemical toilets, which we present to you in more detail in the following table.

Type Description
Separating toilet Separating toilets separate solid waste from urine. The toilet seat consists of two parts: The bowls at the front collect urine directly into their own tube. By collecting faeces and urine separately without flushing water, many advantages such as odour-free operation and germ reduction through drying can be realised.
Bucket toilet A bucket toilet is a basic form of a dry toilet in which a bucket (pail) is used to collect excrement. Usually, faeces and urine are collected in the same bucket, which leads to odour problems. The bucket can be located inside a dwelling or in a nearby small structure.
Eco-toilet A composting toilet is a type of toilet that treats human excreta through a biological process called composting. This process leads to the decomposition of organic matter and turns human excreta into compost. It is carried out by microorganisms under controlled aerobic conditions.
Dry toilet A dry toilet is a toilet that works without flushing water, unlike a flush toilet. The dry toilet may have a raised base for the user to sit on or a squat pan for the user to squat over in the case of a squat toilet.

Decision: What types of chemical toilets are there and which is the right one for you?

If you want to buy a chemical toilet, there are two alternatives you can choose between:

  • Solid-fuel tank toilet
  • Cassette toilet

Depending on the area of application, you can choose one of these two categories. The following sections are designed to help you make your decision.

What are the characteristics of a solid fuel tank toilet and what are its advantages and disadvantages?

The solid tank toilet is a type of chemical toilet whose tank is fixed and only has a combination liquid. This compound binds the stool to a solid instead of breaking it down. Indoor or outdoor ventilation systems are often used to prevent odours in fixed-tank toilets.

  • No connections necessary
  • Uncomplicated cleaning
  • No direct contact with faeces
  • Environmentally harmful
  • High initial costs
  • Odour formation if no ventilation available

What are the characteristics of a cassette toilet and what are its advantages and disadvantages?

One of the most popular variants among mobile toilets is the cassette toilet. The cassette toilet is very practical because it does not require a connection. It is also very hygienic due to the use of flushes and chemical substances. A cassette toilet consists of two different tanks, the waste water tank and the fresh water tank, where both have to be filled with the appropriate liquid.

The purpose of these chemical sanitary liquids is to inhibit germ formation, disinfect, neutralise odours and break down faeces. It is complemented by a siphon system that also has an odour-inhibiting effect to prevent gases from escaping from the toilet.

  • No connections necessary
  • No direct contact with faeces
  • No odour formation
  • Uncomplicated cleaning
  • Easy transport
  • Environmentally harmful
  • High initial cost

Buying criteria

In this section, we would like to show you which aspects you can use to decide between the many possible chemical toilets. The following criteria will help you to compare the mobile toilets with each other:

  • Size
  • Size of wastewater and freshwater tank
  • Flushing system
  • Ease of cleaning
  • Level indicator

In the following paragraphs, we will explain what is important in the individual criteria.

Even if you are on the road a lot, a chemical toilet is very practical. (Photo source: / pilens)


Depending on where you want to use your chemical toilet, you will need different sizes. The size of the chemical toilet depends on where you want to use it. If you want to place it permanently in a motorhome, then you need to pay attention to its dimensions. Otherwise, it is also important to pay attention to the weight, especially if you need to transport the portable toilet often.

The average size of a chemical toilet is between 40 and 50 cm in height and width. The average empty weight is four kilograms.

Size of the waste water and fresh water tank

It is important to consider the size of the chemical toilet’s tank so that you do not have to empty it all the time. With chemical toilets, you need to fill both the wastewater tank and the freshwater tank with a specific sanitary liquid. The size of the tanks varies depending on the model, but is always around ten to 15 litres, with the flush water tank usually being larger than the waste tank. Most chemical toilets are designed for 40 to 50 loo cycles

Flushing system

The chemical toilet generally has two pump systems. The bellows pump and the piston pump. Both pumps are positive displacement pumps and are operated manually. The piston pump is more widespread and popular because it is much stronger and you can determine the exact volume of the liquid with so-called dosing pumps.

Ease of cleaning

A model that is quick and easy to clean not only saves time, but also cleaning effort. However, it is also important to clean your chemical toilet thoroughly so that it lasts for a long time. To clean a chemical toilet, it is important that you only use lukewarm water and a cloth. Otherwise, reactions with the sanitary liquids may occur. For stubborn dirt or urine deposits, you can also use a highly diluted vinegar solution.

Level indicator

A level indicator shows whether the tank is already full. This is very practical because you don’t want to count every time you go to the toilet. With the help of a small indicator, which indicates this with colours, you can prevent the faeces from overflowing.

Facts worth knowing about chemical toilets

How do I empty a chemical toilet properly?

When you notice that the toilet floor waste tank is getting full (liquid is visible near the top of the opening when you pull out the “T” handle to see into the floor tank), the toilet needs to be emptied. In other cases, for example when the use of the toilet is not necessary for a few days or longer periods, it should be emptied, cleaned and left empty.

  1. Separate the upper and lower parts of the toilet.
  2. Empty the toilet waste bin by unscrewing the large round lid on the back of the toilet waste bin. You will notice that when you carry the toilet waste bin by the handle, this cap is “up” and the T-handle or toilet front is facing down.
  3. Make sure that the toilet waste bin is closed. This means that the T-handle on the toilet front is pushed in.
  4. Carry the toilet outside: The entire toilet can be carried outside or, if you wish, separate the upper and lower parts of the toilet while it is still in the house. Then each half can be carried outside separately. Handles on the back of the upper and lower half of the toilet make it easy to carry.

How do I use a chemical toilet?

  1. Please only use the toilet from a sitting position. Standing means messy splashes.
  2. Toilet paper: You should use a biodegradable RV type toilet paper.

Flush the toilet after use:

  1. Open the waste bin in the toilet floor, pull the T-handle in the middle of the front of the toilet floor to open the sliding door that opens the waste bin in the toilet floor.
  2. Flush: Push the rubber accordion valve for the toilet flush in the rear left corner of the toilet once or twice to flush water from the water tank in the toilet lid into the toilet bowl. Pressing once or twice is usually sufficient.
  3. Press the T-handle to close the toilet again.

How do I clean a chemical toilet?

Wash the upper and lower half of the toilet thoroughly outdoors with a garden hose. It is best to use lukewarm water. If a small amount of deodorant/disinfectant remains in the waste container, you can add water from a garden hose and flush the container. You can then empty the diluted waste water.

Image source: / Alexas_Photos