"Shit is very dangerous to people's health", as Margaret Kahiga simply puts it. She is part of the new, no-nonsense approach to improving Kenya's sanitation. Faeces contamination kills one child every 20 seconds - more than Aids and malaria combined. But when it comes to poo, there is a shared sense of "fear, disgust and shame" within local Kenyan communities. Chief Charro is forcing his community to confront the health risks through shock tactics - collecting fresh faeces and placing them directly next to fresh bread, then asking people to eat the bread. It may seem crude, but in areas where over 5,000 people share a single toilet, tackling the taboo is literally a matter of life and death.