What is meant by "structural use" of pesticides?

The term "structural use" of pesticides refers specifically to the application of pesticides within or on a structure, such as buildings or other constructed facilities. This kind of use typically requires a specific type of licensing because it often involves treating areas where people live or work, which raises considerations regarding safety and the potential for exposure to humans and pets.

In this context, the application of pesticides that is considered "structural" typically includes pest control measures aimed at preventing or eliminating infestations in residential, commercial, or institutional buildings. Because of these health and safety implications, regulatory authorities mandate that individuals performing structural pesticide applications be trained and licensed appropriately.

The other options do not accurately describe "structural use." For instance, using pesticides exclusively outdoors does not encompass all structural applications, which can take place indoors. Additionally, certain pesticide uses require licenses, particularly those that involve potential exposure risks, which negates the idea of being application that does not require a license. Lastly, limiting applications strictly to agricultural land does not align with the definition of structural use, as structures can encompass a wide range of environments beyond just agricultural settings.