Which action is necessary if pesticides are to be used in residences?

Using pesticides in residences requires adherence to specific safety and regulatory protocols to protect both residents and the environment. Each action listed plays a vital role in ensuring safety and compliance with regulations.

Evacuating residents during pesticide application is critical to prevent exposure to potentially harmful chemicals. Many pesticides can be hazardous if inhaled or if they come into contact with skin, so ensuring that the area is clear during application is a necessary safety precaution.

Prior notification to residents is another important action. It allows residents to prepare for the treatment and take any necessary steps, such as moving pets, food, or sensitive items, to minimize risks associated with pesticide exposure.

The requirement that only certified technicians can apply pesticides in residential settings is fundamental to ensuring that those applying the chemicals are knowledgeable about safe handling practices, correct application techniques, and emergency procedures. Certification indicates that the technician has received proper training and is familiar with regulatory requirements and safety guidelines.

Therefore, all these actions—evacuation, prior notification, and certification of technicians—are necessary components of safe pesticide usage in residential areas, making the choice that includes all of the above the correct answer.