I always wondered what it is with these wrought iron forms perched on poles that you find on sidewalks in some residential neighborhoods in Buenos Aires. Some of them are empty while others are filled with plastic bags and plastic water bottles. Then I realized they are garbage collectors. But why do Porteños put their trash baskets on poles? Well, there are several good reasons to put them up. Main reason: animals! Elevating the garbage baskets above ground is rat, cat, and most importantly dog-proof. There are so many hungry stray dogs that would otherwise spread the rubbish. Another reason to keep garbage off the ground is the heavy rain that occasionally floods the streets. Last but not least, a reason might be also that these baskets make it easy to spot recyclables, such as cardboard, paper, cans and bottles. There are thousands of trash pickers in Buenos Aires that make a living of what others dispose.