What dog poo teaches us about drug policy

Why don't we let dogs crap on the street? Mostly because it's nasty.

Matt Yglesias makes the point that the intersection between rules and norms isn't always clear cut.

When you look at a public health problem like the fact that the streets of Buenos Aires are frequently smeared with dog crap, it is tempting for anyone who spends most of their time thinking about public policy to argue for a political – that is, legislative – solution. But most places where this particular problem has been solved don't need to resort to the law all that frequently at all. As Yglesias writes:

The fact that in major American cities people generally clean up after their dogs is clearly related to the laws on the books about this, but it's also clearly the case that in practice police departments are not dedicating vast resources to the issue. And in fact though the gains from not having dog shit on the sidewalk are meaningful, they're relatively small compared to the costs of a rigorous enforcement of pooper scooper laws. But what I recall from growing up in New York in the eighties is that the norms shifted to the point where enforcement costs are now very low simply because there's not that much violation.

Now, it is possible to change norms with legislation. But it's equally possible to change norms without legislation, or, for that matter, to enact legislation which does nothing to norms. For examples of all three, look to drugs policy. Heroin has been all but eliminated as a socially-acceptable drug, while the same has not happened to marijuana. Meanwhile, despite increasing control surrounding sales, cigarettes have been fundamentally legal for years, but the norms surrounding their use have changed completely.

Groups who want to change society often go straight to pushing for legislation which, they hope, will do the job for them. But the really effective organisations also skip the political aspect entirely, and try to directly change the norms which, on a day-to-day basis, guide our behaviour far more effectively than the intricacies of law.

Take, for example, the idea that one ought not waste water. Unlike recycling, there's no legal requirement there (in Britain at least – unless there's a hosepipe ban). And unlike reducing electricity usage, there's little financial motivation, since few people are on metered water yet.

There is a narrower point to be made too, which is that dog crap on the pavements is something which could be solved essentially overnight, but hasn't. Require dog licenses to own a dog; require DNA samples to obtain a dog license; match any pavement crap to DNA samples on file.

It's an idea which is perennially suggested, and rarely acted upon – except in a few gated communities, where it has been remarkably successful:

The PooPrints process required all current tenants to bring their pet(s) to our office where their mouths were swabbed for a DNA sample. Any new pets introduced to the property by current or new residents must have a DNA sample taken prior to the move in date.

We believe the PooPrints program has been a huge success for us. We no longer have dog waste complaints, our properties are clean and waste free, and our resident retention rate has increased.

Buenos Aires, take note.

A dog. The dog is adorable. But the dog poos. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

Photo: Getty
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The campaign to keep Britain in Europe must be based on hope, not fear

Together we can show the world a generous, outward-facing Britain we can all be proud of.

Today the Liberal Democrats launched our national campaign to keep Britain in Europe. With the polls showing the outcome of this referendum is on a knife-edge, our party is determined to play a decisive role in this once in a generation fight. This will not be an easy campaign. But it is one we will relish as the UK's most outward-looking and internationalist party. Together in Europe the UK has delivered peace, created the world’s largest free trade area and given the British people the opportunity to live, work and travel freely across the continent. Now is the time to build on these achievements, not throw them all away.

Already we are hearing fear-mongering from both sides in this heated debate. On the one hand, Ukip and the feuding Leave campaigns have shamelessly seized on the events in Cologne at New Year to claim that British women will be at risk if the UK stays in Europe. On the other, David Cameron claims that the refugees he derides as a "bunch of migrants" in Calais will all descend on the other side of the Channel the minute Britain leaves the EU. The British public deserve better than this. Rather than constant mud-slinging and politicising of the world's biggest humanitarian crisis since the Second World War, we need a frank and honest debate about what is really at stake. Most importantly this should be a positive campaign, one that is fought on hope and not on fear. As we have a seen in Scotland, a referendum won through scare tactics alone risks winning the battle but losing the war.

The voice of business and civil society, from scientists and the police to environmental charities, have a crucial role to play in explaining how being in the EU benefits the British economy and enhances people's everyday lives. All those who believe in Britain's EU membership must not be afraid to speak out and make the positive case why being in Europe makes us more prosperous, stable and secure. Because at its heart this debate is not just about facts and figures, it is about what kind of country we want to be.

The Leave campaigns cannot agree what they believe in. Some want the UK to be an offshore, deregulated tax haven, others advocate a protectionist, mean-hearted country that shuts it doors to the world. As with so many populist movements, from Putin to Trump, they are defined not by what they are for but what they are against. Their failure to come up with a credible vision for our country's future is not patriotic, it is irresponsible.

This leaves the field open to put forward a united vision of Britain's place in Europe and the world. Liberal Democrats are clear what we believe in: an open, inclusive and tolerant nation that stands tall in the world and doesn't hide from it. We are not uncritical of the EU's institutions. Indeed as Liberals, we fiercely believe that power must be devolved to the lowest possible level, empowering communities and individuals wherever possible to make decisions for themselves. But we recognise that staying in Europe is the best way to find the solutions to the problems that don't stop at borders, rather than leaving them to our children and grandchildren. We believe Britain must put itself at the heart of our continent's future and shape a more effective and more accountable Europe, focused on responding to major global challenges we face.

Together in Europe we can build a strong and prosperous future, from pioneering research into life-saving new medicines to tackling climate change and fighting international crime. Together we can provide hope for the desperate and spread the peace we now take for granted to the rest of the world. And together we can show the world a generous, outward-facing Britain we can all be proud of. So if you agree then join the Liberal Democrat campaign today, to remain in together, and to stand up for the type of Britain you think we should be.