Roaches are insects of the order Blattaria or Blattodea. There are about 4,500 species of cockroach, about 30 of them are associated with human habitations and about four species are well known as pests. Cockroaches are one of the most commonly noted household pest insects. They feed on human and pet food, and can leave an offensive odor. They can also passively transport microbes on their body surfaces including those that are potentially dangerous to humans, particularly in environments such as hospitals. If you have these pests at home, contact Bugs Or Us!