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. Around the world, one child dies every 15 seconds from to contaminated water. For them the saying "Don't piss where you drink" isn't a clever metaphor, it's a real life challenge.
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 pathogens (viruses, bacteria and parasites) are killed over a period of a couple hours to a few weeks.