What key factor must be considered by unlicensed individuals when applying pesticides?

Unlicensed individuals applying pesticides must operate under the supervision of a licensed pest control applicator. This is crucial because unlicensed individuals often lack the formal training required to understand the complexities of pesticide use, which includes knowledge of safe handling, application techniques, and potential environmental impacts. Supervision ensures that they are guided by someone who understands the legal, safety, and efficacy aspects of pest control, thereby reducing the risk of pesticide misuse and potential harm to people, pets, and the environment.

While the location of application, type of pest treated, and choice of pesticide are all important considerations when applying pesticides, the supervision aspect is fundamental for unlicensed individuals, as it directly pertains to compliance with regulatory requirements and the safe application of pest control measures.