Why Must Shoes and Boots Be Cleaned Before Disinfection in Food Factories?
In the hygiene management of food factories, shoe and boot disinfection is a crucial step in preventing cross-contamination. Many factories set up disinfection pools at
the workshop entrance, requiring employees to step into the disinfectant solution to disinfect their shoes and boots. However, a fatal misconception that is often
overlooked is: disinfection without cleaning. In fact, effective disinfection must be based on thorough cleaning.
Cleanliness is the physical basis for effective disinfection
Disinfectants (such as sodium hypochlorite and quaternary ammonium salts) work by directly contacting and killing microorganisms. When the surface of shoes and
boots is covered with organic dirt from the workshop, such as grease, protein, flour, and dirt, this dirt forms a physical barrier. It not only consumes the effective
components of the disinfectant, causing its concentration to drop sharply, but also prevents the disinfectant from contacting pathogens in the gaps of the shoe sole. The
result is: seemingly disinfection is completed, but in reality, the microorganisms remain unharmed, and the shoes and boots remain a source of contamination.
Ignoring cleaning is tantamount to allowing cross-contamination to occur.
If shoes and boots are placed directly into the disinfection pool without being cleaned, not only will they be ineffective in disinfection, but they will also contaminate the
disinfectant solution itself. As dirty shoes are continuously stepped into the disinfection pool, it quickly turns into a murky, nutrient-rich "bacterial soup," becoming a
breeding ground for microorganisms. Subsequent employees entering will only have their shoes and boots contaminated with more dirt, rather than being effectively
disinfected.
When to Clean Shoes and Boots?
After clarifying "why," it's even more important to know "when to do it."
1. Upon leaving the workshop (mandatory cleaning):
This is the most critical time for cleaning. When employees finish work and leave the workshop, their shoes and boots are covered in dirt accumulated during the
production process. Immediately washing them in a tunnel-style boot washing machine at this time effectively prevents dirt from being carried into the changing room,
avoiding contamination of personal clothing and rest areas, while also reducing the burden of subsequent disinfection.
2. Before entering the workshop (pre-disinfection cleaning):
Before entering the production workshop and stepping into the disinfection pool, shoes and boots should be basically clean. If there is visibly visible dirt on the soles, it
should first be removed using a separate boot washing machine or by hand, and then soaked for disinfection to ensure that the disinfectant directly acts on the shoe
surface.
Best Practice: Clean Before Disinfecting
Industry-leading food safety standards (such as BRCGS and AIB) and hygienic design principles clearly state that effective cleaning must precede disinfection. This
means that food factories should include a cleaning step before the disinfection pool, such as using a boot washing machine to automatically scrub the soles and sides of
shoes to remove organic dirt, allowing the disinfectant to directly act on the cleaned surface for true sterilization.
In food factories, cleaning shoes before disinfection is not an option, but a rigid rule that determines the effectiveness of hygiene measures. Cleaning shoes before
leaving or entering the workshop is the reliable way to prevent cross-contamination and safeguard food safety.
