Can a single sanitation lapse put an entire product line at risk?
In early 2025, a series of romaine lettuce recalls in Canada and the United States were linked to Listeria monocytogenes. The contamination, found in ready-to-eat salad kits, was eventually traced back to insufficient cleaning of conveyor belts and other food contact surfaces in a processing facility.
Despite having routine cleaning schedules and certificates in place, investigations revealed gaps in how sanitation protocols were validated—highlighting the difference between documentation and effectiveness.
What Went Wrong
— Surface Build-Up Over Time
Biofilms developed in hard-to-reach conveyor areas due to ineffective mechanical scrubbing.
— Lack of Environmental Monitoring Frequency
Routine swabbing did not include equipment crevices or post-cleaning verification for critical control points.
— Misalignment Between SOPs and Practice
While cleaning protocols existed on paper, actual procedures deviated during night shifts or under time pressure.
Audit-Based Insights on Sanitation Controls
Structured audits often focus on the effectiveness of environmental monitoring, not just its presence.
✅ Verification of Cleaning SOPs – Ensuring cleaning procedures are reviewed, tested, and reflect real production conditions
✅ Zone-Specific Swabbing – Including post-cleaning checks in high-risk equipment zones
✅ Monitoring Frequency – Evaluating whether testing frequency aligns with product sensitivity and processing risks
✅ Continuous Improvement – Checking if previous contamination findings led to real changes in sanitation practices
Certima’s Mission
As an impartial certification body, Certima assesses compliance with international food safety measures. While Certima does not provide operational guidance, audits serve as a valuable tool for businesses looking to evaluate their fraud prevention strategies and supply chain integrity.