Commercial applicators must keep records of pesticide use for what minimum period of time?

Commercial applicators are required to keep records of pesticide use for a minimum period of two years according to federal and many state regulations. This requirement ensures that there is a verifiable history of pesticide applications, which can be crucial for tracking efficacy, managing resistance, and ensuring safety for both humans and the environment. Keeping records for two years allows regulatory authorities to confirm that pesticide applications comply with label requirements and other regulations. This duration also aligns with the recommended periods for investigations or assessments of pesticide impact, ensuring that any potential issues can be addressed in a timely manner.