Which of the following pest control activities requires a Department of Pesticide Regulation Pest Control Business License?

The requirement for a Department of Pesticide Regulation Pest Control Business License is specifically linked to commercial pest control activities. Controlling tree pests typically involves the application of pesticides in a professional capacity, often for either residential or commercial clients. This activity is governed by strict regulations to ensure safety, effectiveness, and compliance with environmental standards.

In contrast, home gardening practices, pet treatment applications, and routine lawn maintenance may not require such a formal license if performed by private individuals for their own properties or pets. These activities can often be managed under personal use, where the application of pesticides does not involve selling services or commercially applying pesticides. Therefore, the control of tree pests stands out as an activity that necessitates a formal license to ensure compliance with safety regulations and to protect public health and the environment.