A cockroach can live for up to a week without its head. The roach only dies because without a mouth, it can't drink water and dies of thirst. The cockroaches in THEY NEST are pretty big. The world's largest roach is six inches long with a one-foot wingspan. The cockroaches in THEY NEST move pretty quickly.
Cockroaches can only run at speeds up to three miles in an hour.
They can, but cockroaches do not spread disease by means of direct transmission. Instead, because they tend to inhabit the uncleanable areas of any establishment, they inadvertently bring with them microbial agents of decay when they travel, thus transporting pathogenic organisms which can subsequently cause disease. Cockroaches have never been blamed for any outbreaks of disease in the United States. A good place to start is our Roach Facts page .