Cockroaches are equal opportunity offenders and German roaches are the worst offenders of all — at least in most areas of the USA.  Worldwide, there are many species of roaches but it's a safe bet that none of them will ever make anyone's endangered species list!

German roaches prefer kitchens & bathrooms but will infest any place that provides a source of food & moisture.  Again, these are the most common roaches and most likely to infest both homes and commercial establishments.  German roaches range from dark tan to dark brown and adults are about one-half to five-eighths inch long.  Their egg capsules generally produce 20-40 nymphs ("baby roaches") and under normal conditions, these roaches breed year-round.

German roaches can ultimately produce thousands of offspring each year!  It is their adaptabilty for survival and ability to multiply exponentially that makes them seem to reappear in time, even after they've been completely "eliminated!"