Which of the following is NOT one of the three main types of pesticides?

Rodenticides, which are designed specifically to control rodent populations, are indeed a type of pesticide. However, when discussing the three main types of pesticides, the focus is primarily on insecticides (targeting insects), herbicides (targeting unwanted plants or weeds), and fungicides (targeting fungi and mold). These three categories cover the most common and broad applications in pest management, addressing significant groups of pests that affect agriculture, horticulture, and public health.

While rodenticides play an important role in managing rodent populations, they do not fall under the main categories typically highlighted in discussions surrounding pesticide classifications. This distinction helps to clarify the focus on more prevalent agricultural and horticultural challenges presented by insects, weeds, and fungal infections, emphasizing the importance of identifying these primary groups in pesticide practice and regulation.