The most frequent topic in letters pages of British local newspapers is dog fouling. It's a complex and significant issue, arousing very strong emotions in people. It symbolises the widespread lack of community identity, feelings of inclusion and contempt for fellow citizens. We discover why dog mess is not as big a human health hazard in the UK as we think, but we hear it costs the farming industry a huge amount each year. Some Scottish councils are getting tough, others are getting friendly with dog owners. We meet Israeli and Czech solutions to the problem and go on the beat with environmental officers who issue fixed penalties. We ask dog food manufacturers about designing their food with dog poo in mind.

This incendiary and complex topic gets people angry, and some become obsessed with it, like the dog poo blogger and a super hero. Hilarious, surprising, informative and very dear to our hearts, Sheena McDonald explores the disgusting problem.