I am going to brag on my neighborhood. I am not sure the reason but there is seldom dog mess on our sidewalks in Palermo. There is a man who lives somewhere across the street who has a large (of course) lab retriever. I sometimes sit on my darkened balcony in the early hours with coffee. One morning out he came onto the empty street with his dog. I thought I'm going watch this guy and see what he's really made of. No one was on the street, nothing else was moving anywhere, and he could not have have known I was there on the 6th floor watching him. Sure enough, there in the darkness, the dog left a "deposit" and out came his plastic bag and he cleaned it up in the darkness with me watching. I LOVE my neighbors. What a GREAT neighborhood!