In what situation should a pesticide spill area be barricaded?

Barricading a pesticide spill area whenever there is a presence of children or pets is essential for safety reasons. Children and pets are generally more vulnerable to the harmful effects of pesticides due to their smaller body size and behavioral tendencies, such as playing or exploring the area. These factors can lead to accidental exposure to harmful chemicals, which may pose serious health risks.

When children or pets are nearby, there is an increased urgency to prevent them from accidentally coming into contact with contaminated soil, plants, or surfaces that have been treated with pesticides. By barricading the area, it provides a physical barrier that helps keep them safe and minimizes the risk of exposure.

The other scenarios outlined do not carry the same level of immediate risk to vulnerable populations, making the presence of children or pets a critical factor in deciding to barricade a spill area.