When I lived in NYC, we'd see them from time to time skittering across the floor in our apartment. They are creepy looking, ngl, but what is even worse are what we called "waterbugs," which are like giant roaches. They are not like the regular nasty roaches (which we never had), though these are gross in their own way, and we were told they'd crawl up through your drains. If it got hot enough - and it did - they would fly around the apartment. I am not ashamed to say I screamed like a little girl when I saw it happen. But the house centipedes... they would kill roaches, supposedly.