What is the term for a chemical agent used to eliminate an established pest?

The term "Eradicant" specifically refers to a chemical agent designed for the purpose of eliminating an established pest population. This term emphasizes the definitive action of eradicating pests rather than merely preventing them or controlling them in a limited capacity. In the context of pest management, using an eradicant implies a strategy focused on completely removing a pest rather than just managing its levels.

In contrast, insecticides and herbicides are more specific types of chemicals; insecticides target insects, while herbicides target plants, often weeds. Both of these terms focus on particular categories of pests rather than on the act of complete eradication. Deterrents, on the other hand, are substances used to repel pests and discourage them from approaching an area, but they do not eliminate already established populations. Hence, when discussing the elimination of established pests, "Eradicant" is the most accurate term to use.