Dry Composting Toilets
Ideal Domestic Solution for remote homes, cabins, mobiles and temporary accommodation
Choose from Four Models The most popular product 
now selling in Portugal and Spain
  • NE non-electric:
    + Solar option

  • Standard:
    Semi-automatic

  • Deluxe:
    Fully automatic

  • Separera
    basement chamber

Practical Benefits * How does a Composting Toilet Work? Self-Installation * An Historical Perspective
Order your Model

  Nature’s most Organic Recycling made for Humans


The Most Practical Benefits How does a Composting Toilet Work?

Our ecological toilet system is :~

  • Clean, simple, hygienic and practical solution.

  • Integrated for normal domestic use in the bath or washroom

  • Aerobic decomposition breaks down human waste into a safe organic product

  • Good for nature and our pocket with no corporate service bills to pay

  • No waste water polluting our land and potentially our drinking water

  • Easy to install!

A biological composting toilet providing sound techno/ecological balance — a perfect solution for our human peace of mind.

The main job of a composting toilet is to contain human waste and create conditions for rapid decomposition – including any pathogenic organisms – into humus; a safe stable soil-like substance. 
This humus product is then an essential fertiliser or organic nutrient suitable for plant and tree growth. It can be composted and dug into the earth to enrich the soil for nature’s benefit. You may find the compost tray is emptied just once a year. 
Rapid decomposition requires adequate oxygenation to remove any excess liquid. The air flow that enters the composting toilet ensures this process whilst also eliminating any odour via the unit’s vent pipe. Under typical conditions the process is complete in 60 days but disposal is normally required less frequently usually just once a year.
Our own experience is that a natural and healthy diet produces a stable organic waste that is in fact almost entirely free of odour. A composting toilet is easy, hygenic and safe to use with long term economic and environmental benefits. What is more it includes us in nature’s most natural recycling process!


How to Install Your Dry Toilet A Historical View - rich resource or flush it ?!

Everything you need to install the composting toilet unit is supplied in the box, including an easy to follow manual.  If you need a longer length of standard 6” plastic pipe it is readily obtained from most hardware stores. 
You can be confident that basic DIY skills are all that you require. IF YOU NEED OUR ENGINEER TO INSTALL for you - please enquire for a quotation.

This is what you do:

  1. WITH THE BIOLET TOILET UNIT LOCATED in position in a ventilated room… 

  2. (NE Only) THE DRAIN PIPE CONNECTS to the back of the unit, and must then exit to an external drain or soak away – either under the floor or simply through an exterior wall.

  3. THE FLEXIBLE AIR VENT PIPE must pass through the ceiling, or though an exterior wall. Roof–flashing is supplied. The ceiling is securely sealed with silicon and a rain/insect cap is fitted.

  4. FOR ELECTRIC VENTILATION a DC (Solar) or AC (mains) connection is required. The Solar powered models are supplied with a small solar panel which is easily mounted on a south facing elevation –the thin power cable can pass through the roof via the vent pipe.

  5. A COMPOST STARTER BAG can be supplied, and you place this in the Toilet unit the first time before use.

It’s that simple !

It is a curious fact that our western society begun with a very different view from our Eastern neighbours. We in the West saw our human waste as something to be rid off quickly and out of sight. In the East it was considered a rich resource.

How did this happen?

Perhaps in the West the people simply followed the example of our “landed gentry”, the wealthy ruling class, who upon building their castles, would excrete their business directly into the mote – the water surrounding their castle. By example then, except for the peasant people, the city population disposed of their own directly into the street to be flushed away or not by the rain; "Duarde Chuva!".

But in the East, in particular in China and Japan traveling people were often enticed by farmers to use their way-side privy, and in cities human waste was collected and transported out into the neighbouring farm land. It was such that several visitors staying in an Inn would receive a discount in payment simply by exchange for their collective deposit of humanure!

Neither example was without some serious drawbacks and health risks, which history relates. Today we benefit from technology and knowledge – we understand how to work with nature. A biological composting toilet provides ecological balance - a perfect solution for our human peace of mind.


Choose from Four Models

To choose the model that you want to order – be sure to check the following:

  • SAFE UNIT CAPACITY – how many people for occasional or continuous use?

  • VENTILATION – do you need a DC or AC power source for extra ventilation?

  • TEMPERATURE – In cold locations you may need additional automatic heating.

  All models feature automatically closing compost covers and are made in ABS-PVC and stainless steel.

BioLet Principles - easy to use, manual or automatic


BioLet® NE (Non-Electric)
 €895.00   
BioLet Manual NE is a non-flush self-contained toilet that eliminates the need for Water, Electricity or Chemicals.
Two chambers or containers are provided that are used alternatively, one under the seat the other at the back of the unit. Waste matter is broken down biologically and removed once every 6 months or as necessary up to 1 year.

Requires only the drain and air vent pipe connections for a simple installation.

Capacity: 4 people continuous use +1 person with optional 12V DC fan.
Dimension: H67 W55 D88 cm

Supplied in the Kit:
Composting Toilet, 2 Composting Chambers, Handle, Mixing rod, Flexible vent pipe + connection, Roof-flashing, Rain-cap and insect netting for vent pipe, 1.5m drainage pipe, Styrofoam insulation, misc. fittings, Humus starter, Owner’s manual, Guarantee.  
PLUS Free Humus Starter Pak

Optional: A Solar DC fan option may be purchased to assist venting via the air pipe. €134.00


BioLet Standard
 €1,195.00   
BioLet Standard is a semi-automatic unit with Electric AC fan assisted ventilation and heat element.
The standard model is easy to use and ensures optimum aeration with automatic ventilation. To provide a simple means of rapid organic breakdown of compost the unit is fitted with a manual mixing rod which can be turned after use.

A 225 Watt heating element heats the air that is circulated through the composting chamber. The temperature is thermostatically controlled to 18 degrees C. Air is automatically vented by a 25 Watt motorised fan located in the unit’s vent pipe exit. Typical daily power demand is approx. 55 Watts.

Capacity: 3 people continuous use to 4 people part-time use.
Dimension: H66 W55 D74 cm

Supplied in the Kit:
Composting Toilet, 2 Composting Chamber, Mixing rod, Flexible vent pipe + connection, Wall brackets and fittings, Roof-flashing, Rain-cap and insect netting for vent pipe, Styrofoam insulation, Spare shear pins, 1.5m drainage pipe, humus starter, Owner’s manual, Guarantee and Instruction video.  PLUS Free Humus Starter Pak



BioLet Deluxe
 €1,450.00   

BioLet Deluxe is a fully automatic mixing, heating element with AC Electric fan assisted ventilation.
A practical and superior choice where convenience and reliable composting is essential in cold locations and climates.

Automatic mixing occurs after each use by means of a twin-blade electric mixer. Automatic heating and venting is the same as the Standard unit. Peak power rating is just 290 Watts. Typical daily power demand is approx. 110 Watts.  Fluid indicators are fitted standard.

Capacity: 3 people continuous use to 4 people part-time use.
Dimension: H66 W55 D74 cm

Supplied in the Kit:
Composting Toilet, 2 Composting Chamber, Mixing rod, Flexible vent pipe + connection, Wall brackets and fittings, Roof-flashing, Rain-cap and insect netting for vent pipe, Styrofoam insulation, Spare shear pins, 1.5m drainage pipe, humus starter, Owner’s manual, Guarantee and Instruction video.  PLUS Free Humus Starter Pak



BioLet Separera
Showing compost chambers,
tank and pipe.
 €910.00   

BioLet Separera - Where humidity is a concern the Separera offers a solution. This unit is supplied with separate containers – one inside the toilet for solids and paper and one outside the house, or under the floor, for liquid. When you use a Separera the liquid and the solid are separated while it is being used. The chambers are designed for ease of use.  The urine may be mixed 8:1 with water for ideal use as a fertiliser.

The unit is fan-assisted to ensure optimum aeration of the solid waste and to vent out any odours. The standard model is 18 Watts AC mains powered.

Capacity: 4 People continuous use.
Dimension: H66 W65 D81 cm

Supplied in the Kit:
Composting Toilet, Composting Chambers, Liquid Ejector Tank, Mixing rod, Flexible vent pipe + connection, Wall brackets and fittings, Roof-flashing, Rain-cap and insect netting for vent pipe, Styrofoam insulation, Spare shear pins, 1.5m drainage pipe, humus starter, Owner’s manual and Guarantee.  PLUS Free Humus Starter Pak

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Please allow 14 days for delivery  *  Portugal + Spanish distribution only

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