Cockroaches

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¨ Cockroaches are one of the most common insects found in structures. Fossil evidence indicates that cockroaches have been on earth for over 300 million years.  Because cockroaches are so adaptable, they have successfully adjusted to living with humans. About 3,500 species of cockroaches exist worldwide, with 55 species found in the United States. Only four species are common pests in Pennsylvania structures. These are the German, brown-banded, Oriental, and American cockroaches. A fifth species, the Pennsylvania wood cockroach is an occasional nuisance pest in some locations.