Food, water and warm shelter will attract cockroaches. Areas that are high in humidity such as basements and boiler rooms and even sewers are especially attractive to cockroaches. The presence of cockroaches can lead to a definite impression of uncleanness- especially if your guests see them. The truth is that it is not necessarily uncleanliness that will produce a cockroach manifestation. However, uncleanliness will cause it to be much more difficult to get rid of them.