People that let their dogs relieve themselves in stairwells of apts

This is where the dog should actually be going.

So my girlfriend lives in an apartment building that doesn't really have a first floor since there are businesses below. Some residents are so freaking lazy, they let their dogs pee or crap in the stairwells of this apartment complex because they don't want to walk outside to a grassy area or other suitable place for their pet to relieve themselves. I hope you wastes of space don't ever pro create, because the world is not yours to destroy. Move, start a fitness plan or better yet, do everyone a favor and give your dog to someone who actually cares. Annoyance level: Pissed.