Pigeon Crap feces whatever you want to call it. I hate the messes these birds/pigeons leave behind. The other problem is what they leave behind in their nest or nesting areas. I’m just not a fan of these pigeons and their foul pooping crap they leave for us to navigate. I know I’ll get comments from people who just love these birds, OK I get it. Just from my point of view they are nasty. The rest of the story is that when you walk through this sh** you track it into your home. Little children, pets play on that floor = gross.
So what do you do? Hire ProBest Pest Management to clean it up and fix the problem 480-831-9328. Correctly install bird spikes and check them to adjust. If the birds move, you correct that issue and pretty soon they will move on.