Who should you contact for guidance on disposing of pesticide containers?

The correct choice involves contacting the county agricultural extension office for guidance on disposing of pesticide containers. This office serves as a resource for local agricultural practices including the safe handling and disposal of pesticides. They are knowledgeable about local regulations, best practices for disposal, and can provide specific guidance tailored to the local area, which is crucial since disposal laws can vary by region.

While the other options—local waste management services, state environmental protection agencies, and pesticide manufacturers—can provide relevant information, they are often more focused on broader regulations and protocols rather than localized agricultural practices. The county agricultural extension office, however, is directly involved in the community's agricultural needs and can offer precise and applicable advice regarding pesticide disposal that is pertinent to the area in question.