Fortunately, it is most commonly associated with sewers, and rarely ventures outdoors. The cockroach that will have most exterminators called out in Davis is the Oriental roach. The Oriental is large and black, and lives predominantly outdoors, preferring ground brush. However, they can be easily attracted indoors if conditions are right. However, there might be a few more cases of Oriental infestation because of the mild winter and the late rain.
Most Oriental roaches get inside homes by accident.
However, if the moisture, food, and temperature are right, roaches could be attracted to the area in order to reproduce. Big black ones. They're pretty aggressive sometimes. Scoville recommended several procedures in order to avoid attracting roaches to both one's home and yard. Keeping wood piles and other items which may accumulate moisture and mold off of the ground are important because molding wood attracts cockroaches, he said.