Risk analysis and preventive controls

A risk analysis should be performed initially and reviewed periodically for modifications. This is accomplished through a thorough inspection and data review of past pest pressures. When hiring a new pest management company, it can be helpful to provide the site’s past pest history documentation, in particular, trending reports, which summarize pest activity by area and monitoring device. Electronic data capture systems can also be helpful in accessing the information needed in making these assessments.

Buildings going through renovations, additions or new site construction should consider pest potential as part of the building design process. It can also be useful when determining site selection, as many of the structural pests encountered, including stored product pests, can come from the exterior.

Program monitoring

As with original risk analysis, a visual inspection will be important in assessing areas program effectiveness over time. The concept of pest vulnerable zones (PVZ) can assist with the inspection and monitoring process. A PVZ, or sometimes called pest vulnerable areas (PVA), are spaces identified as particularly conducive to pest activity and may be assigned a barcode for electronically recording inspection results. Pest capturing equipment can also be used as part of the monitoring process. Pheromone traps, insect light traps and multi-catch rodent traps are examples. The types and numbers of equipment will vary based on the site assessment.

Corrective actions

Despite a company’s best efforts at prevention, pest problems can still occur. How businesses respond is key in providing long-term control results. Whether it’s a pest like a mouse or a phorid fly infestation, finding and controlling the source through root cause analysis is essential in long-term program success.

When a pest occurs, it is a symptom that something has gone wrong with the preventative program. The use of insecticides or supplemental traps is only addressing the symptom and not the cause of the preventive controls failure. A more detailed look as to why the pest problem occurred is needed. This analysis can take time and requires assistance from the food plant staff working with the pest management firm. 

Take for example, house flies and rodents originating around an exterior dumpster attracted by product spillage around the dumpster/compactor unit. The flies are breeding in the spillage and the rodents are feeding on the spillage. Perhaps part of the reason the spillage is present is due to a poor seal where the compactor meets the dumpster box. Not having sanitation staff present to clean the dumpster pad during times when the disposal company is changing out the dumpster may be part of the problem. Yet another cause may be that the dumpster box never gets cleaned. Fixing that seal and scheduling sanitation crews at the proper time can reduce spillage.

Two main components that will help facilitate the success of the pest management program under FSMA rules include the incorporation of electronic documentation and establishing sufficient time for inspection. Electronic documentation can assist with data assessment and record-keeping storage, while inspection time is essential for monitoring the program’s effectiveness and troubleshooting, should corrective actions be necessary.