Cockroaches are insects that belong to the order of Blattodea. There exists nearly 5,000 species of cockroaches. Cockroaches are extremely common insects and can tolerate a wide range of environments. They have the ability to withstand extremely cold temperatures, allowing them to live in the Arctic. Most species of cockroach are roughly the size of a thumbnail, however, some species can be much bigger. They have a relatively small head and a broad, flattened body. Most species of cockroach tend to be reddish brown or dark brown. Cockroaches tend to live in leaf litter, rotting wood, tree cavities, under bark, under log piles, and among debris. Cockroaches are social insects and are inclined to aggregate. They prefer warm conditions found within buildings and are mainly nocturnal. Cockroaches pose serious health and safety risks due to allergies and asthma triggered by their allergens. They also spread germs and bacteria. Cockroaches are some of the most adaptable creatures on earth, which makes controlling and exterminating an infestation incredibly difficult. To help prevent a cockroach infestation, keep food sealed and stored properly, clean daily to prevent trash build up, and seal all cracks and holes in the home.