Around Chiang Mai's city center, the old town, is a big moat. Of course, every now and then some small leafs drops into it. When I was walking along observing the city, I met the guy who's job is to clean it all up. His working tool, which I couldn't manage to fit all in the photo, is probably 5-6 meters long. Made from bamboo, makes it light weight, but I can still imagine it's pretty hardcore to maneuver it around the whole day in the burning sun.