Which of the following businesses is not exempt from DPR's licensing requirements?

In the context of pesticide use enforcement, it is crucial to understand the various categories of pest control businesses and their licensing requirements. The business focused on controlling tree pests does not fall under the exemptions commonly applied to certain pest control activities. Typically, agricultural pest control and aquatic pest control are among those that may have specific exemptions due to their broad applications and established practices. Household pest control can also be regulated differently, often allowing for less stringent oversight.

In contrast, controlling tree pests is more specialized and generally does not qualify for the same level of exemption as the other categories mentioned. This is primarily due to the potential for significant environmental and economic impacts associated with the management of pests in trees, which are vital to both ecosystems and agriculture. Therefore, businesses involved in controlling tree pests must adhere to more stringent licensing requirements to ensure proper training, safety, and compliance with regulatory standards.