I spent the last year and a bit in a basement that wasn't properly insulated and near the sump pump system but never in my life have I seen so big and so many of them. My girlfriend was terrified and wouldn't sleep if she knew there was one still alive on the walls or ceiling. It was brick walls too so if one was in between the bricks I had to stick a make shift "smothering device" which was just a wad of Kleenex on the tip of something small and long so I could crush them before they wriggled away only to return. I know you're not supposed to kill them but honestly there was a revolving door of them and it didn't matter if they stayed a bit and then mottled or came in fully grown, these suckers were having a hay day. I tried laying out a sticky sheet to catch them and it didn't seem to affect them. Just caught a couple daddy long legs and rolly pollies, which I would have preferred! I hate these things because of how they move on the floor in the corner of my eye, nothing compares to that immediate jolt of terror as you scramble out of its way.