In the developing world clean water and sanitation are very scarce. This is due to over population and lack of infrastructure and poses a serious health risk to the affected populations. In these parts of the world not only do they lack the infrastructure to attain clean water, they also lack the infrastructure needed to deal with all their waste, so they end up contaminating the little water they have. The Peepoo bag is a long thin bag (14 x 38 cm) with a guaze liner, and coated on the inside by a thin film of Urea. Urea is the most common fertiliser in the world and is a non-hazardous chemical. When the urea comes into contact with faeces or urine, an enzymatic breakdown takes place into ammonia and carbonate, driven by enzymes which are naturally occurring in faeces. As the urea is broken down, the pH value of the material increases and hygienisation begins. Waste born patho- gens (viruses, bacteria and parasites) are killed over a period of a couple hours to a few weeks.

The Peepoo bags are biodegradable (currently made from 45% renewable materials but they aim to up that to 100%), and when the bags degrade in the soil, the ammonia byproduct acts as a harmless fertiliser taken up by the plants. So not only does the Peepoo bag help them get rid of hazardous waste, it provides a valuable agri- cultural resource.

An added benefit is that the Peepoo bags provide a sanitation while conserving one of their most valuable re- sources, water. The system doesn‘t require any water, other than to wash your hands after use.

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