If I had a quid for every time I've heard that "it's only a tiny minority of dog owners who are irresponsible" I'd been a rich man. It isn't. It's the vast majority. Very few people out and about with dogs have the faintest clue how to control them. And most of them think that "dogs must be kept on leads" doesn't apply to them. Round here, dogs are allowed to barge around all over our local nature reserve which is a precious habitat for ground-nesting birds, and the walkways round the reserve are known as Dogshit Alley. Many people pick up dogshit only if they think they're being watched, and the bags of dogshit look so lovely hanging from the bushes next to the paths. And God knows what kind of mentality will accept picking up a warm dogturd through thin plastic in any case.