Who is responsible for investigating complaints about pesticide misuse?

The Michigan Department of Agriculture (MDA) is primarily responsible for investigating complaints about pesticide misuse within the state. The MDA handles pesticide regulation and enforcement at the state level, ensuring compliance with state pesticide laws and safety standards. This includes addressing complaints related to the use and application of pesticides, as well as investigating any reports of misuse or environmental harm.

While the Environmental Protection Agency (EPA) does have regulatory authority over pesticide registration and sets federal standards for pesticide use, its role is more overarching and focused on national policies rather than individual state investigations. Local health departments may address broader public health concerns but typically do not handle specific pesticide misuse complaints unless they intersect with health issues. Thus, the MDA is specifically tasked with this responsibility in Michigan, making it the correct answer.