What is defined as any chemical used to control pests?

The term that encompasses any chemical used to control pests is pesticide. This includes a wide variety of substances designed to deter, kill, or manage various types of organisms considered pests. Pesticides can target insects, fungi, weeds, and even rodents.

While fungicides, insecticides, and herbicides are specific types of pesticides targeting particular types of pests, the broader term "pesticide" includes all of these categories. Fungicides specifically address fungal issues, insecticides focus on insect control, and herbicides are used to eliminate unwanted plants or weeds. Therefore, the definition of pesticide appropriately captures the overall purpose and function of these chemical agents in pest management.