Why is it essential to read a pesticide label before use?

Reading a pesticide label before use is crucial because it provides users with critical information related to the proper application of the product. It details the specific application rates, ensuring that the correct amount is used to achieve effectiveness while minimizing harm to people, non-target organisms, and the environment. The label also outlines safety precautions that must be followed to protect the applicator and others who may come into contact with the pesticide. Additionally, it contains legal requirements for usage, which are necessary for compliance with local and federal regulations. Understanding these aspects is vital for the responsible and effective use of pesticides, making option C the correct answer.

Understanding price differences, learning the history of the product, or identifying the packaging material do not provide relevant guidance for safe and effective pesticide application, which is the primary concern when using pest control products.