Cleaning, Sanitizing, and Facility/Pest Management
This domain tests whether you can keep surfaces, chemicals, water, and pests under control. Questions often hinge on the difference between cleaning and sanitizing, or on sanitizer concentration.
Clean, then sanitize
Cleaning removes soil; sanitizing reduces pathogens to safe levels. Surfaces must be washed, rinsed, then sanitized. A sanitizer applied over grease or food residue fails. Food-contact surfaces are cleaned and sanitized after each use, when switching from raw to RTE food, after 4 hours of continuous use at room temperature, and whenever contamination occurs.
Manual warewashing
- Wash in detergent at about 110°F.
- Rinse.
- Sanitize: chlorine 50–100 ppm, quaternary ammonium 200–400 ppm, iodine 12.5–25 ppm, or hot water at 171°F for 30 seconds.
- Air dry; never towel-dry. Verify strength with the matching test strip. Too strong is also a violation and leaves toxic residue; contact time follows the label.
Chemicals and facility
- Store chemicals below and away from food, in labeled containers; keep safety data sheets accessible.
- Handwashing sinks are for hands only, stocked and unobstructed.
- Prevent backflow with an air gap or vacuum breaker; never leave a hose below the flood rim of a mop sink.
- Garbage containers leakproof and covered, emptied often; outdoor areas clean.
- Pest control: only a licensed applicator applies pesticides. Use integrated pest management: seal openings, screen windows, self-closing doors, air curtains, 6-inch clearance, no standing water. Record sightings and service reports.
Worked example
A slicer is wiped with a chlorine cloth at closing; the bucket tests at 500 ppm and the blade guard is never removed. Two failures: excessive concentration leaves residue, and the hidden surface stays soiled. Correct practice is disassembly, wash, rinse, sanitize at 50–100 ppm, air dry, and repeat every 4 hours of use.
Traps
Sanitizing without washing; putting dish soap in the sanitizer compartment; assuming no sightings means no infestation; storing scoops in sanitizer.