Duplex Termite Treatment — Coordinated Approach for Shared Structures

A duplex is structurally a single building with a shared party wall, shared roof assembly, and typically a shared foundation perimeter. Drywood termite colonies established in the shared framing can be active in both units simultaneously.

Treating only the unit where symptoms are noticed (frass, swarmers) often provides temporary relief while the colony continues in the adjacent unit's shared framing. The most effective duplex treatment addresses both units simultaneously.

For owner-occupied duplexes or duplexes with an owner-occupied unit and one rental unit, coordinating treatment timing with the tenant requires advance notice. Orange oil treatment can often be scheduled during occupied periods; fumigation requires 3-day vacating of both units.

Shared foundation perimeter subterranean treatment benefits both units simultaneously — a single Termidor perimeter treatment addresses the colony in the soil around the entire foundation, eliminating risk to both units.