Integrated Pest Management in Food Sites: From Bait Boxes to Data
How to move from bait boxes on a map to a risk-based, data-driven pest management programme
Key takeaways
- Integrated pest management (IPM) combines prevention, monitoring, and targeted treatment, with chemical use as a last resort.
- The site, not only the contractor, is responsible for pest control; contractors must be competent and their work reviewed.
- Monitoring devices should be placed by risk, and their results trended to find sources, not just counted.
- Building fabric, proofing, housekeeping and storage practices prevent more infestations than baits do.
- BRCGS Food Safety and the ISO 22002 prerequisite programmes expect a documented programme, competent people, records and trend analysis.
1. Why pest control fails
Many sites have a contract, a site map full of numbered devices and a monthly report, and still find activity. Typical reasons:
- Devices placed for coverage rather than for risk.
- Reports filed without anyone reading the trends.
- Recommendations from the contractor not acted on.
- Proofing gaps: doors left open, damaged seals, holes around pipes.
- Spillages and waste that provide food and harbourage.
2. The IPM hierarchy
| Level | Approach | Examples |
|---|---|---|
| 1. Exclusion | Stop pests getting in | Door seals, strip curtains, mesh on windows and vents, sealing pipe penetrations, fast-acting doors |
| 2. Restriction | Remove food, water and shelter | Cleaning spillages, waste management, stored goods off the floor and away from walls, removing vegetation near buildings |
| 3. Monitoring | Detect early | Non-toxic monitoring devices, insect light traps, pheromone traps for stored-product insects, inspections |
| 4. Targeted control | Act where activity is found | Trapping, targeted treatments by competent technicians |
| 5. Review | Learn from data | Trend analysis, investigation of sources, programme review |
3. Placement by risk
Device placement should reflect a documented risk assessment:
- External perimeter: rodent stations at appropriate intervals and near entry points, considering local regulations and non-target species.
- Internal: monitoring devices near doors, along walls in storage and production, avoiding toxic baits in production and open-food areas.
- Flying insects: light traps positioned so they do not attract insects into open-product areas, and away from direct product exposure.
- Stored-product insects: pheromone traps in raw material stores for products such as flour, grains, nuts and spices.
The site plan must show the current position of every device, and be updated when changes are made.
4. Contractor competence and oversight
| Expectation | Evidence |
|---|---|
| Qualified technicians | Training certificates relevant to the country |
| Defined scope and frequency | Contract specifying routine visits, inspections, call-out response |
| Safe use of pesticides | Product list, safety data sheets, approvals for use in food premises |
| Documented reports | Activity found, actions taken, recommendations, proofing issues |
| Periodic in-depth survey | A thorough inspection by a biologist or field specialist at defined intervals |
Where the site manages pest control in-house, the same competence and documentation apply.
5. Turning reports into action
Monthly reports are useful only when someone acts on them:
- Review each report within a few days, sign it and assign actions for recommendations.
- Trend activity per device and per area over months, not just per visit.
- Investigate repeated activity to find the source: incoming goods, a structural gap, a waste area.
- Close proofing and hygiene actions and record completion.
- Review the programme at least annually and after significant changes or infestations.
6. Incoming goods and stored products
- Inspect incoming vehicles and materials for evidence of pests.
- Reject or quarantine contaminated deliveries.
- Apply stock rotation and avoid long storage of susceptible materials.
- Clean storage areas, including under racking, on a defined schedule.
7. Common audit findings
- Device positions on site not matching the plan.
- Toxic baits inside production areas.
- Contractor recommendations repeated for months without action.
- Insect light trap catch not analysed.
- No trend analysis or annual review.
Conclusion
Effective pest management is mostly about prevention and data. Proofing, housekeeping and well-placed monitoring, combined with a competent contractor and a site team that reads and acts on the results, keep pests out far more reliably than additional bait stations.
Pull the last six pest reports and ask: which recommendation has been repeated more than once, and why is it still open?