Natali takes her dog for a walk every morning through the streets of Camp de l'Arpa in the Clot neighborhood of Barcelona. Among the items she carries for her morning stroll, it's customary to find her dog's leash and bags for picking up its waste, as well as a small bottle of water to clean up any urine on the street. She always keeps it in her pocket. She explains that it's a habit she adopted when she got her dog a year ago. "I already had friends who did it. And I'd heard complaints in the neighborhood about those who didn't," the resident admits.