Peromyscus maniculatus Surveillance Method

A good Integrated Pest Management (IPM) rodent program starts with inspection. A good inspection provides four valuable pieces of information: what is present, the extent and severity of the infestation, the location of rodent harborage and high-activity area, and the safest and most efficient control strategies.

First identify key sources of exterior rodents. Next, identify rodent entry areas (i.e. utility lines entering the building, spaces beneath doors, unscreened vents, etc). Lastly, look for high-activity areas, typically near food sources, by searching for fresh fecal pellets, gnawing damage, runways/tracks/grease marks, borrows, and urine stains. It may help to conduct night inspection, use black lights or flash lights, use tracking patches, and/or video cameras (Corrigan, Robert M., and Dan Moreland. Rodent Control: a Practical Guide for Pest Management Professionals. GIE Media, 2001).

Photo courtesy of CDC
Additional Links:
https://www.cdc.gov/rodents/prevent_infestations/seal_up.html