What type of pesticide includes Chlordane and DDT?

The correct choice identifies Chlordane and DDT as chlorinated hydrocarbons, which are a specific group of pesticides. Chlorinated hydrocarbons are characterized by their chemical structure, which includes chlorine atoms bonded to carbon compounds. This class is known for its effectiveness in controlling a variety of pests due to their persistence in the environment, which means they remain active for extended periods after application.

Chlordane was primarily used for termite control and various agricultural applications before its regulatory restrictions due to environmental and health concerns. DDT, known for its application in agriculture and mosquito control, gained notoriety for its long-term ecological effects, particularly on bird populations.

This classification highlights how these chemicals work and the historical context of their use. Understanding this helps pest control operators recognize the implications of using such substances, considering both their effectiveness and the potential regulatory and safety issues associated with their use.