Draw three zonesAffected, connected and clear are working labels
The affected zone contains current reliable evidence. The connected zone has a plausible movement route — a doorway, service penetration, shared furniture route or operational transfer — that needs testing. A clear zone has no supporting signs at the time of inspection.
These labels can change as evidence develops. They prevent whole-property assumptions while making it explicit where belongings, staff, guests or equipment should not move. In a managed building, access to a connected communal area may need landlord or manager approval.
Identification comes first. Specimens, droppings, damage, monitor catches and characteristic spotting are considered alongside freshness and distribution. Where evidence is uncertain, monitoring can test the boundary before a treatment product is selected.
- Name each room or work area precisely
- Record the newest sign and direction
- State who controls connected spaces
AffectedInspect harbourage and issue pest-specific preparation.
ConnectedTest the route and monitor before widening treatment.
ClearAvoid transfers and continue observation without unnecessary products.