Insects are little creatures that cannot be avoided by people or other animals; their effects on the world are so numerous that they cannot be counted. This paper focuses on these little but noticeable organisms (insects), which most humans regard as foes. It reveals some unknown facts about insects and portrays them as both allies and foes. At certain stages of their lives, insects engage in both friendly and dangerous activities, such as honeybees, which are beneficial to people but may be harmful when belligerent. Because of the benefits that friendly insects provide, man conserves them in order to maximize profit. The war on insects began many years ago, but insect pest management appears to be the most effective method of eradicating hazardous insects. Insects are vital to the environment and cannot be completely eradicated; instead, they develop resistance to some of the methods employed to manage them.