In the context of odor control, which statement is true concerning biocides?

Biocides are substances that can kill or inhibit the growth of microorganisms, including bacteria, fungi, and viruses. When it comes to odor control, many unpleasant odors are produced by these microorganisms as they break down organic materials. By using biocides, it is possible to eliminate the source of the odor—specifically, the bacteria and other microbes that are causing it. This directly addresses the underlying issue rather than merely masking the smell, thereby providing a more effective and long-lasting solution to odor problems.

The other statements do not hold true in the context of biocides. For example, biocides are not simply masking agents; they are designed to actively combat odors by eliminating the microorganisms responsible for them. Likewise, while biocides can vary in effectiveness based on their formulation and the types of microbes they target, it is not accurate to say that they are ineffective against all types of microbial odors. Moreover, while many biocides can be safe when used correctly, it is generally advisable to take precautions, such as wearing protective equipment and ensuring proper ventilation, to minimize any potential health risks associated with exposure.