Pest Control—Cockroaches and Silverfish
Cockroaches and silverfish are nocturnal insects that like to hide in dark, warm spaces such as wall cracks and openings around pipes, fitting into gaps as small as one-sixteenth of an inch. Their late-night nature and minute hiding spaces make them hard to detect, and homeowners often only become aware of their presence once they start appearing during the daytime, a sign that populations have grown large. Roaches and silverfish enter homes looking for food and water, feasting on starchy matter like book bindings and wallpaper glue; homeowners frequently find the insects living in stacks of paper and cardboard boxes where starches are ever-present.
The most common cockroaches in U.S. are the German, brownbanded, Oriental and American cockroaches, although the German is the species most often found inside homes. They are all similar in appearance but differ in size, with the American cockroach being the largest of the four. Oriental cockroaches are also referred to as "water bugs" due to their penchant for damp spaces such as basements, leaky pipes and underneath sinks and refrigerators. Wood roaches are another common species, but they prefer moist, outdoor environments. They don't typically invade households because the dry environment isn't conducive to their survival. While most pest-control dusts and sprays will work on common household roaches, wood roaches seem to be impervious to them.
Silverfish, though less repulsive in appearance, are no more welcome in our homes than roaches. These tiny wingless insects can wreak havoc on treasured book collections and stored clothing, and because they can live for up to one year without food and can hide in the tiniest wall crack, silverfish are not easily eliminated.