This document defines what a pest is and discusses reasons for pest control. It describes pest management systems and their goals of prevention, suppression, and eradication. Various types of pests are outlined including insects, arthropods, microbes, weeds, mollusks and their examples. Control methods like hygiene, traps, pesticides and fumigation are explained. Effects of infestation and some common pests like cockroaches, rats, moths, termites and their management are highlighted.