BioLet with 25 years on the market is the most popular biological toilet in the world. It is also the first one to pass various governmental tests.

It has been improved during the years, and the NSF - approved BioLet XL is the latest and most sophisticated model.

BioLet can be one of the best investments you have ever made as far as comfort, environment and economics are concerned.

In warm weather, nature aerobic soil microorganisms digest and transform leaves and other organic debris into a hygienic, inoffensive soil component called "humus". Humus provides the nutrients for new plant growth and holds moisture in the soil. Gardeners around the world utilize this process when they compost yard and garden waste and use the humus as fertilizer.

The BioLet controls the process with modern technology to accelerate and optimize biological decomposition, evaporates excess liquid, exhausts odors and water vapor ... All within an attractive home appliance that is easy to use and economical to operate.

The process is initiated by establishing a healthy compost inside the mixing chamber. A convenient package of Humus Starter containing the correct blend of organic materials is poured through the toilet seat opening into the mixing chamber. Connect the ventilation pipe, plug the electrical cord into a standard grounded outlet and the BioLet is ready for use.

Mechanical mixing and aerating makes the compost porous and sifts the humus into the collecting tray. In the 20 Deluxe model, a microswitch controlled motor turns the internal mixers. In the Standard model, a convenient external handle coupled to an internal gear box operates the mixers with a gentle turn after each use.

In the electric models, a small heater with an adjustable thermostat and an efficient air blower work together to provide heat and sufficient air flow to reduce human waste by up to 90%. The heater evaporates excess liquid while maintaining warm temperature and the air blower exhausts odor and provides oxygen for the microorganisms. The dry 10% remainder or humus collected in the lower tray can safely be recycled to the soil where the nutrients will be utilized for new plant growth.

When used primarily in a part-time summer home or cabin, the BioLet toilets will manage the waste from 4 to 6 people, with some occasional overload. However, the BioLet 60 XL has been certified by the National Sanitation Foundation to serve 4 people in a full time residential setting. The BioLet cannot be damaged by freezing nor will it rust or corrode as all process components that contact the waste are of stainless steel or high impact ABS plastic. Install the BioLet NE (nonelectrical) in applications where bringing 110VAC to the building is either impractical or too expensive. Where there is insufficient heat/or natural convection to evaporate excess liquid, a small drainage system may be required. The NE is equipped with a one inch drain for this purpose.

Usage and ambient temperature will determine the actual frequency, but in a part time cabin or summer home, annual removal of the humus is sufficient. During this period, excrement and paper have been completely transformed into valuable humus. When the compost mixing chamber is filled, simply remove the front cover, pull out the tray with the processed humus and trench it into the soil where the nutrients will be used for new plant growth. Return the empty tray and activate the mixing mechanism to sift down the compost refilling the tray. This provides more room in the compost mixing chamber for continued operation. The BioLet NE does not have a tray. However, the humus is disposed of in the same manner after removing and emptying the composting container located in the back of the toilet

Instead of polluting lakes and streams, the BioLet transfers human waste into a valuable material that is safely returned to the soil.

The ventilation pipe leads moist air away. It also ventilates the entire bathroom so additional ventilation is not needed. The adjustable thermostat combined with the patented, heated air recirculation results in a very low energy cost. the fan drives warm air through the air channels and under the compost. This provides the compost with a plentiful supply of oxygen and warms it up to optimum temperature. When you lift the lid all you see is a white disk. The compost cover opens automatically when the seat is pressed down.

1) How many people will use it and for how long during the year?
Ans.- (Our ratings are based on four uses per person per day). Include here the full time residents, guests, vacation use, business place and intensity. You can always expect it to be adequate for a few more people for short periods of time throughout the year. The solution for a higher use rate is to choose the larger model or buy two toilets. Note: Soiltech always discounts for purchases of more than one toilet. Another thought develops here and that is: If my friend and I both buy can we combine a purchase and get a discount? The answer is , YES, we are glad to do this.

2) Where will you put your toilet?
Ans.- The minimum temperature for composting is 64 degrees F. which is the average room temperature. Therefore when you will be using one year round in colder climes it will have to be in a room that is heated (with as little as a light bulb the composting can be kept going). There is no need to provide heat if you install in a vacation place without heat when not in use - freezing does no harm to the BioLet and the compost action will resume when the space is warmed up.

3) Do you have electricity?
Ans.-If not the Non Electric performs great. We advise to do a couple of things to assist in the evaporation of excess liquid such as running the vent pipe next to other heat sources like a furnace pipe, run a drain line to a small leaching pit (18"x18"x24") or indoor/outdoor planter & a 12v fan is also available.

4)Will there be an odor?
Ans.- No.Not if the ventilation kit is properly installed. These work on the principle of a partial vacuum and air is pulled into the toilet taking away with it the odors.

5)How much material will I take out?
Ans.-An example is the XL with 4 full time users. There will be 26 pounds of humus produced in 1 month. But the longer it remains in the unit the more it will be reduced to heat, carbon dioxide and water vapor. Timing and usage patterns are the final determining factors. For the Non Electric 4 full time users will commonly empty a composting container 6 times a year.

6) What will I do with the composted matter ( humus )?
Ans.- It should be trenched in to soil (around trees,shrubs,flower beds).If you can't use it, give it to someone that can or have a septic tank service pick it up. In some places it can go out with your garbage but if in doubt what to do, ask your local health agent.

7) What is the worst thing that can happen?
Ans.- All of the biologic process stops (from additions of bleach or too much liquid) in which case it becomes a holding tank until it is emptied and restarted.

8)Do I put anything in to aid the composting?
Ans.- Yes, put in the starter mix that comes with the new toilet. Then you will make additions of starter mix or peat moss or other high carbon materials to keep it going.
Other good additives are popped popcorn,potato peels,rice or wheat hulls & old bread.

9) How much are you willing to maintain a composting toilet?
Ans.- These require very little maintenance for the vacation place and it increases mildly with more use. Some people hire services to empty humus for a small fee.