Introduction
In any food-related setting, maintaining hygiene is not only a best practice—it’s a legal and safety obligation. Understanding the difference between cleaning and sanitising is essential for ensuring food safety and preventing foodborne illnesses. While cleaning removes visible dirt, sanitising targets invisible microorganisms that can cause harm. Both processes are required for safe food handling and are core competencies in any hospitality, healthcare, childcare, or aged care role.
Definition of Cleaning
Cleaning refers to the physical removal of food residue, grease, dirt, and other visible contaminants using water and detergent. It doesn’t necessarily kill bacteria or viruses but reduces the presence of substances that can harbour them.
Example: Wiping a benchtop with warm soapy water to remove crumbs and spills.
Definition of Sanitising
Sanitising is the process of reducing or killing harmful microorganisms on surfaces that have already been cleaned. This can be done through heat or chemical agents such as chlorine-based solutions.
Example: After cleaning the benchtop, applying a food-grade sanitiser spray and allowing it to sit for the recommended contact time.
Why Both Are Needed
Cleaning alone may leave behind bacteria invisible to the naked eye. Without sanitising, these microbes can multiply and contaminate food. Conversely, sanitising a dirty surface is ineffective, as debris can shield bacteria from the sanitising agent.
Key Differences Between Cleaning and Sanitising
| Aspect | Cleaning | Sanitising |
| Purpose | Removes visible dirt and grease | Kills or reduces microorganisms |
| Process | Detergent + scrubbing + rinsing | Sanitiser application + required contact time |
| Products Used | Detergents, brushes, cloths | Food-grade sanitisers, heat (steam, hot water) |
| Frequency | Often after every task or spill | After cleaning, before and after food prep |
| Visual Outcome | Looks clean | May not look different but is microbiologically safe |
Purpose and Process
Cleaning is performed to create a visibly tidy surface. Sanitising follows to make it safe for food contact. Both steps are integral to preventing cross-contamination and are used together in all regulated food businesses.
Products and Equipment Used
- Cleaning: Warm water, food-safe detergent, scrubbing brushes, microfibre cloths
- Sanitising: Chlorine (50-200 ppm), Quaternary Ammonium Compounds (Quats), iodine-based sanitisers, or hot water (77°C or higher)
Frequency of Cleaning vs Sanitising
In commercial kitchens, surfaces are cleaned and sanitised:
- After each food preparation task
- At the end of each shift
- When switching between raw and cooked foods
Australian Food Safety Requirements for Cleaning and Sanitising
Australia enforces strict hygiene laws underpinned by the Food Standards Code, particularly Standard 3.2.2 of FSANZ. These laws apply nationally but are supported by state-specific regulations.
FSANZ Guidelines (Standard 3.2.2)
Standard 3.2.2 requires food businesses to maintain clean and sanitised food contact surfaces and equipment. It outlines procedures, acceptable sanitising agents, and required hygiene outcomes. Businesses must:
- Use appropriate methods for cleaning and sanitising
- Ensure staff are trained in hygiene practices
- Verify procedures are effective
State-Based Rules and Training Expectations
- NSW: Requires compliance under the Food Act 2003; NSW Food Authority provides guidelines.
- VIC: Offers free online training via DoFoodSafely
- QLD: Enforces cleaning under the Food Act 2006; detailed cleaning schedules expected.
- SA: Provides templates and fact sheets for sanitising procedures
Penalties for Non-Compliance
- Fines from local councils
- Business closure
- Legal liability for foodborne outbreaks
- Damage to reputation and customer trust
Step-by-Step Process to Clean and Sanitise Effectively
Preparation and Safety Measures
- Wear PPE (gloves, aprons, eyewear)
- Display wet floor and cleaning signs
- Read Safety Data Sheets (SDS) for chemicals
Cleaning: Remove Food Debris and Dirt
- Scrape off food scraps
- Apply warm water and detergent
- Scrub thoroughly with brushes or cloths
Rinsing Thoroughly
Rinse with clean potable water to remove detergent and loosened debris. Skipping this step can dilute or deactivate sanitising agents.
Applying the Sanitiser
- Chemical Method: Mix sanitiser according to label instructions
- Contact Time: Leave for at least 30 seconds or as specified
- Methods: Spray bottles, immersion tanks, or wiping
Drying and Storage
- Air dry wherever possible
- If towels are used, ensure they are single-use or freshly laundered
- Store cleaned items in sanitary, covered areas
Types of Sanitisers Used in Food Settings
Chemical Sanitisers (e.g., Chlorine, Quaternary Ammonium)
- Chlorine: Inexpensive, effective; must be properly diluted (e.g., 50 ppm for surface use)
- Quats: Odourless, less corrosive, compatible with many surfaces
- Iodine: Effective at lower temperatures; more expensive
Heat-Based Sanitisers
- Commercial dishwashers: Must reach a rinse temperature of 82°C
- Boiling water: Used for small utensils or tools
- Steam sanitisation: Useful for heat-tolerant surfaces and equipment
Choosing the Right Sanitiser for Your Business
Consider:
- Type of surface
- Risk level (e.g., raw meat areas)
- Staff training and product availability
- Regulatory approval
Cleaning and Sanitising in Different Workplaces
Commercial Kitchens and Restaurants
- Clean benchtops after each task
- Sanitize knives and chopping boards between uses
- Deep clean floors, exhaust hoods, and cool rooms weekly
Childcare and Early Learning Centres
- Sanitize eating areas and toys daily
- Disinfect shared surfaces such as nappy change areas
- Avoid harsh chemicals near food or children
Aged Care and Healthcare Facilities
- Clean and sanitise high-touch surfaces (doorknobs, bedsides)
- Use hospital-grade disinfectants in kitchen and medication areas
- Follow strict infection control protocols
Common Mistakes and How to Avoid Them
Using the Wrong Sanitiser or Detergent
- Always use food-grade products
- Don’t confuse cleaning agents with sanitisers
Inadequate Contact Time
- Follow the label’s required duration
- Use timers if necessary to ensure efficacy
Recontaminating Cleaned Surfaces
- Use fresh cloths or single-use wipes
- Store clean utensils in sealed, sanitary locations
Training and Best Practices for Food Handlers
Legal Training Requirements
Under Standard 3.2.2, food handlers must:
- Know when and how to clean and sanitise
- Understand hygiene risks
- Follow company cleaning procedures
Online and In-Person Training Options
- DoFoodSafely (free online course)
- Accredited short courses
- On-the-job induction programs
Building a Culture of Food Safety
- Create and follow cleaning checklists
- Use wall charts for visual reminders
- Encourage team accountability and incident reporting
For training and certification, explore this food safety course to upskill and ensure compliance.
Frequently Asked Questions
What is the difference between cleaning and sanitising?
Cleaning removes visible dirt; sanitising kills or reduces invisible microbes.
Can you sanitise without cleaning first?
No. Cleaning must precede sanitising for it to be effective.
What chemicals are used in food-grade sanitisers?
Chlorine, Quaternary Ammonium Compounds (Quats), iodine-based solutions.
How often should food surfaces be sanitised?
After cleaning, between tasks, and at the end of each shift.
Are household sanitisers safe for commercial kitchens?
Not always. Use only products approved for food contact surfaces.
What are the legal requirements for sanitising in Australia?
Compliance with FSANZ Standard 3.2.2 and relevant state legislation.
How can I tell if a surface has been properly sanitised?
Use verification methods such as ATP testing or chemical test strips.
Is hot water enough to sanitise utensils?
Yes, if the temperature reaches 77°C or higher for at least 30 seconds.
Do I need different sanitisers for food contact and non-food contact surfaces?
Yes. Always ensure the sanitiser is suitable for food contact if needed.
What training do food handlers need for cleaning and sanitising?
Food handlers require training on cleaning procedures, chemical safety, and food safety laws.
Final Thoughts
Cleaning and sanitising are cornerstones of food safety in Australia. Whether you’re working in hospitality, childcare, aged care, or healthcare, mastering these processes is not only a regulatory requirement but also vital to public health. By understanding the difference between cleaning and sanitising and following best practices, Australian workers can protect consumers and maintain a safe, compliant workplace.
