Get rid of the flies, cockroaches and reduce the waste!

Get rid of the bad smells in pit and Blair toilets in 12 hours!










TREATMENT OF WASTE WATER TREATMENT PLANTS TREATING EFFLUENT FROM human settlements, ABATTOIRS, distilleries, bottling AND milk processing PLANTS, etc.








Types of Toilets


 Home How to fix the problem What is Bio-Activator Types of Toilets Testimonials Waste Water Treatment Toilet Humour Orders & Enquiries Agents Wanted Origins of Bio-Activator



1.    Crude pit toilet:

These are common in the rural areas where the homeowner has to build his/her own toilet. It is usually just a hole dug down as far  as what the owner can physically dig. Often rocks and high water tables prevent the hole from being too deep. The toilet is enclosed by whatever materials are at hand, anything from pieces of corrugated iron, wooden boards or even just a blanket hung on poles.

2.    Ventilated Improved Pit Latrine (VIP):

There are various types of VIP's but they have certain things in common. They are situated on a concrete base or pedestal and have a constructed enclosure, either steel or brick. The VIP's claim to fame is the design which incorporates a black pvc pipe which is mounted at the back of the toilet, through the concrete base and reaching up to just past the roof of the enclosure. The idea is that the back of the toilet must face North (in the southern hemisphere) in order to have the maximum amount of exposure to the sun. The sun heats up the pipe (black heats up more than any other colour) which in turn heats up the air inside. This heated air then rises and draws the smells out of the pit instead of these smells venting out by the toilet where you sit. Sometimes there are 2 pipes to vent the smell. That is how it is supposed to work but in reality this does not happen and these toilets smell as bad as any crude pit toilet.

Sometimes a double vault, or second chamber, is built to receive the waste to try give it more capacity in order to last longer before becoming full.

3.    Urine Division Toilet:

These toilets have a separate section either in the front of the toilet where the user is supposed to urinate, or some toilets have a totally separate basin for the urine, which is then piped to a separate soak-away area so that it does not mix with the faeces. The idea is that the waste should dry out and there is usually a removable slab or hatch at the back of the toilet for the removal of the dried waste. Unfortunately this is not what happens. It is extremely difficult for either males or females to successfully aim for that tiny section where the urine is supposed to go. Even if you are sitting down. Children also have difficulty. In all the UD toilets that I have treated I observed that the front section for urine was always full of faeces and toilet paper. These toilets also smelled as bad as any other toilet.

4.    Blair Toilet:

These toilets are found in Zimbabwe and Wikipedia describes a Blair toilet as follows:

"Its design makes use of air currents, a septic tank like pit, over which is built an upper structure with an open light-trap entrance and ventilation pipe from the bottom pit with a fine wire grate to keep out flies but more importantly to trap those entering the toilet hole from flying out towards the light. The result is odourless and hygienic, as flies cannot escape from the faecal matter to spread disease, and the gases produced by the decomposing waste are redirected outside". As with any other pit toilet these can also smell badly.

5.    Dry Toilets:

There are a few designs of "dry toilets" which are often built in housing complexes or villages, and also in townships. The most common type is probably like the one in the sketch below:

Description: C:\bio-activator\bio-activator\bio-activator\Dry Toilet.gif

A shallow cement trench is connected to the house into which the waste is flushed. The idea behind the design is that the water will seep out of the trench through a number of slits on the bottom and sides. As more waste comes in it pushes the existing waste towards the back of the trench. During this process the waste is supposed to dry out so that when it reaches the back wall it can then be shoveled out to be transported away or alternately used as compost in the garden. In reality this does not happen and ultimately the waste becomes the breeding ground for flies and other goggas. The waste remains wet because it clogs up the slits through which the water is supposed to seep out of and as a result any attempt to empty the trench becomes a messy and smelly affair. The end result, unfortunately, is that the smells and the flies remain. Also the trench then immediately starts filling up and the problem starts all over again.

Bio-Activator is the ideal treatment for these toilets. The first noticeable result is that the bad smells will disappear. Secondly, if you lift the cement slab over the trench you will see a drop in the level of the waste within the first week. Bio-Activator will degrade the waste very quickly into water and gas. The gas will evaporate and Bio-Activator will break down the waste which has blocked the drainage holes so that the water will flow out again.

If the toilet is treated with Bio-Activator on a regular basis (once a month) it can continue to be used indefinitely without it filling up again and without the smells returning.

6.    Another type of dry toilet:

Some municipalities have installed a dry type of toilet which has a grid onto which the waste falls and the water drains through to a tank underneath. Apparently the home owner is supposed to use a rake (not supplied by the installer) to rake the waste to a hatch behind the toilet and then when it has dried out they are supposed to take it out where the supplier states that it can be used as compost. These have a whirly-type vent which is supposed to draw the smells out.

All these type of toilets which I have investigated were very smelly and getting full. The owners were not properly informed what to do and they all told me that they do not want to rake the waste or use it in their vegetable gardens. There were no services provided with these toilets to pump out the water in the tank underneath or to dispose of the waste by any other means.

These toilets are unfortunately not as wonderful as what the supplier makes them to be and the people who have to use them suffer from smells, flies and cockroaches and the toilets getting full the same as any other type of pit toilet.

These toilets can be successfully treated with Bio-Activator to get rid of the smells and to keep the level of the waste from rising too quickly. Pour as much water over the pile of waste on the grid to break it down and get it thoroughly wet. It must then be treated like any other pit toilet.

 7.    Sealed chamber toilets:

These are similar to double chamber VIP's except that the pit is not very deep and the chamber is completely sealed on the bottom and sides which does not allow for the water to seep out. The design intention is not clear with these toilets. Either they were intended to allow the waste to move to the back of the chamber (I do not know how) where it somehow dries out and is supposed to be used as compost, or it was meant for the waste to be removed by a vacuum tanker when the chamber is full. In most areas there are no tankers available for this type of service and as a result they get full. These types of toilets also stink like all the other types.

I have successfully treated these toilets where the smells have gone and the level of the waste has also gone down even though there is no apparent drainage for the water!

 8.    Septic tanks: 

Septic tanks usually have 2 chambers (3 chambers are better). The waste is flushed into the first one where the anaerobic process starts digesting the waste. As the tank fills up an overflow system allows mainly fluids, solids in suspension and some of the smaller particles of waste to overflow into the second chamber. Here the anaerobic process continues to digest the waste into water and gas. The intention of this design is that the overflow from here into the soak-away or French drain should only be clear fluids. This water then seeps away into the ground through this drain.

However, the anaerobic process is seldom efficient in the 2 chambers of the septic tank and invariably this results in solids and solids in suspension flowing over into the soak-away or French drain. This waste then clogs up the bottom and sides of the drain which prevents the water flowing out. The drain therefore fills up and results in a smelly seepage above the ground. This blockage then often prevents any more waste flowing out of the septic tank and as a result the waste causes toilets to flush slowly and outside drains to overflow.

Bio-Activator will speed up the anaerobic process in both chambers of the septic tank so that the waste is efficiently digested into water and gas. The results of this process will then flow into the soak-away/French drain and also clear the blockage here so that the water can seep away freely. Unless the septic tank or soak-away/French drain has physically collapsed there is no need to build a new one or to have it pumped out ever again.

 Smells, Flies and Cockroaches:

Treatments with Bio-Activator will take away the smells. When the smell goes then the flies and cockroaches will also go. This can help in reducing the risk of opportunistic infections which is particularly beneficial to people living with HIV Aids, TB and other dread illnesses.


Please remember that there is no substitute for clean, sanitary habits!

Wash your hands regularly!







































































 Proudly Local!

free counters

Logo design by Shelz
Copyright 2007 Bio-Activator
Last modified: 30-Jan-2019