PSI Texas State Board Nail Tech Practice Exam 2026 – Complete Test Prep

The correct choice identifies a substance that does not fit into the category of antimicrobial pesticides. Antimicrobial pesticides are specifically designed to control harmful microorganisms, including bacteria, viruses, fungi, and other pathogens.

Insecticides, fungicides, and algaecides are all developed with a focus on specific types of pests or microorganisms. Insecticides target insects, fungicides are designed to combat fungal infections, and algaecides are formulated to eliminate algae growth.

On the other hand, herbicides are substances used to kill or manage unwanted plants (weeds), and their primary function does not involve targeting microorganisms. Therefore, herbicides do not classify as antimicrobial pesticides, as they play a different role in pest management and do not directly address microbial threats.

In this context, understanding the distinct roles and target organisms of these substances helps clarify why some are considered antimicrobial and others are not.