Cockroaches are the pest kingdoms most notorious household pests. Cockroaches will infest homes, restaurants, and other places that have a food pantry. Most come out at night, to scavenge for food, although if they are seen during the day, this can indicate and very large infestation. Cockroaches like to hide in dark places during the day, such as behind the stove, in vents, and within the plumbing. They are able to walk up walls and across the ceiling, without falling, due to little, sticky pads. Cockroaches can produce several generations within one year and are best exterminated by a professional pest control company.