Associate Certified Entomologist (ACE) Practice Exam

Where are dust formulations typically used?

1. In open areas only

2. In small cracks, crevices, and inaccessible spaces

3. Exclusively in outdoor environments

4. In areas easily reachable by humans

The correct answer is: In small cracks, crevices, and inaccessible spaces

Dust formulations are specifically designed to be applied in small cracks, crevices, and inaccessible spaces where pests may hide or breed. These formulations are advantageous because they can penetrate tight spaces effectively, delivering a pesticide where it is most needed but often difficult to access with other types of products. They adhere well to surfaces, providing extended control as the dust remains effective over time. While it is true that dust formulations can be utilized in outdoor environments, their unique properties and applications make them particularly suited for the more confined spaces found indoors, such as behind appliances or in wall voids. Additionally, applying dust in easily reachable areas lacks the effectiveness that dust formulations bring to those hidden spots where pests are likely to reside, thus highlighting the importance of using them in areas that are not easily accessible.