Maintain a Clean Environment
Cleaning, sanitising and the difference
Candidates must distinguish cleaning (removing visible dirt, grease and food residue with detergent) from sanitising (reducing microorganisms to a safe level with heat or a chemical sanitiser) and sterilising (destroying all microorganisms, rarely required in food premises). The standard sequence is: remove food and loose debris, wash with hot water and detergent, rinse, sanitise, then air dry. Air drying matters because a wet surface can support bacterial growth and a wet surface dilutes sanitiser.
Schedules and pest control
A cleaning schedule records what is cleaned, how often, by whom, with what chemical and at what concentration. Chemicals must be stored separately from food, labelled, and used at the manufacturer's dilution. Pest control includes sealing gaps, keeping bins closed, removing food and water sources, and reporting sightings. Waste areas, grease traps and floor drains are common pest entry points.
Traps that appear in questions
- Believing a surface that looks clean is sanitised. Visible cleanliness is not microbiological safety.
- Sanitising a dirty surface. Soil reduces sanitiser effectiveness, so clean first.
- Mixing chemicals, or using a stronger dilution than stated. Stronger is not safer; it can leave residue and is a chemical hazard.
- Storing chemicals above or beside food, or decanting into unlabelled bottles.
- Wiping with a dirty cloth or reusing a cloth across raw and ready-to-eat areas.
- Forgetting that cleaning records are part of the food safety program.
Worked example / rule of thumb
A bench used to portion raw chicken must be used for salad next. Rule of thumb: clean first, then sanitise, then air dry; never sanitise over soil. Remove scraps, wash with detergent and hot water, rinse, apply sanitiser at the labelled dilution and contact time, air dry, and wash hands afterwards.