Cockroaches have adapted to living with people and need four things to survive:- water, food, shelter and warmth. Cockroaches have been on the earth for 250 million years. These are widely distributed pests that annoying and when abundant are also destructive. These destroy food, damage fabric in bookbinding and other material. They spread diseases as they leave filth when run over the food. Though there are 3,500 species of cockroaches existing in the world only two species are common and occur quiet often. They are German and American Cockroaches.