Actually at our house, and in our town, there are so many stray unfixed males that we cannot leave windows open at night. If we do, we wake up to the smell of male spray which has been directly sprayed into the window.
We have both male and female cats here (all fixed indoor cats) that attract them apparently. So its a far larger problem than "little cat poop" as it has cost hundreds to clean our couches, rugs, even mattreses before. All because people let cats outside. Again, I do not condone hurting the cats, but I wanted to clear up that some people have a VERY large problem with others cats.