When you observe pesticide misuse or misapplication, the priority is to stop the application immediately and take steps to protect people, pets, and the environment. Once the immediate danger is paused, document what happened—including product used, amounts, location, circumstances, and any exposures. Notify your supervisor so the incident can be reviewed and corrective actions can be put in place. Finally, follow the regulatory reporting requirements for pesticide incidents, which helps authorities track problems and prevent recurrence. This approach directly reduces risk, preserves safety, and ensures compliance with law. The other options don’t fit because increasing the application rate would worsen harm, ignoring the situation is unsafe and illegal, and posting a warning on social media doesn’t satisfy safety or regulatory obligations.