Why is it important to clean before sanitizing?

• A. Sanitizing alone is sufficient.
• B. Cleaning before sanitizing is unnecessary.
• C. Cleaning helps remove dirt so sanitizing is effective.
• D. Sanitizing kills all germs without cleaning.

Answer: (C)

Cleaning before sanitizing is essential because cleaning removes dirt, grease, and food particles that can hide germs and block the sanitizer from working. Sanitizers reduce the number of remaining germs, but they work best on a clean surface where they can contact each microbe directly. If a surface is dirty, residue can shield germs and even interfere with the sanitizer’s effectiveness, so germs may survive. By cleaning first, you physically remove soils and reduce the microbial load, then sanitizing can do its job more reliably. The idea to sanitize without cleaning isn’t reliable on dirty surfaces, and sanitizers don’t instantly kill every germ—cleaning sets the stage for safe, effective sanitizing.