Which factor can lead to a pest infestation being noted as inactive?

The identification of an infestation as inactive often relies on the presence of evident signs of previous pest activity without current pests being present. This can include indicators such as old frass (wood shavings), discarded wings, or dead insects that suggest an infestation occurred at some point but has since been resolved. In this context, current pest presence indicates an active infestation, while the absence of living pests, despite the signs of past activity, supports the classification of the infestation as inactive.

In contrast, evidence of damage present would suggest that pests have been active, as damage typically correlates with an ongoing issue rather than an inactive one. Observing pests during an inspection clearly indicates an active infestation; current observations of live pests would rule out inactivity. Lastly, infestation reports from multiple months may show ongoing issues or recurrent problems but do not specifically denote inactivity without current evidence of pests. Thus, the presence of evident signs without current pest presence is what aligns with the notion of an infestation being classified as inactive.