My University dorm room is so old and outdated that cockroaches stay outside the building. No matter how long you hold the door open or how much food you have laid out the roach is not coming in. The roaches are like "That's some air we haven't had in over 100 years." Natural Selection has happened in this building. The roaches that went in 100 years ago have become something else. If a roach appears in this building understand an unclean individual brought it in and it is running around to get back out.
That's just that on that.
