IICRC Odor Control Technician (OCT) Practice Exam 2025 - Free OCT Certification Practice Questions and Study Guide

A ULV fogger is designed to disperse deodorants in a fine mist, which is most effective when using water-based products. This is primarily because water-based deodorants tend to have lower viscosity and are more easily atomized into tiny particles without clogging the fogging equipment. Additionally, water-based solutions are often safer and more environmentally friendly, making them more suitable for a variety of indoor applications where odors need to be neutralized without introducing harmful residues.

In contrast, oil-based and solvent-based deodorants can create issues with the fogging equipment due to their thicker consistency, which can lead to clogging. Alcohol-based products also might not be ideal, as they can evaporate quickly and may not provide effective residual odor control when dispersed through a ULV fogger. Therefore, water-based deodorants are the recommended choice for use with ULV foggers, aligning with the equipment’s optimal operation and efficiency.