American Cockroach Periplaneta americana

This roach holds an unlikely title: it's the largest cockroach routinely found in homes, and it's earned a reputation as one of the most troublesome household pests. It goes by a confusing array of nicknames—waterbug, ship cockroach, Bombay canary—but here's the kicker: despite being called 'waterbug,' it's not aquatic at all. It's also frequently misidentified as a palmetto bug, a case of mistaken identity that adds to the confusion surrounding this adaptable invader.