Pest Control for Chicago Two-Flats

A two-flat is essentially one structure split into two units that share virtually every system: walls, floor-ceiling assembly, plumbing risers, electrical, HVAC venting. From a pest's perspective there is no real boundary between upstairs and downstairs.

That is why a bed bug or roach problem in one unit becomes a problem in both units faster in a two-flat than in almost any other building type.

Bed bugs spread between two-flat units through floor-ceiling penetrations (radiator pipes, plumbing chases, electrical boxes), shared walls in stacked layouts, and the common stairwell that connects them.

Detection lag makes it worse — a unit can be infested for weeks before the residents notice, all while the colony is migrating through shared structure.

Our two-flat protocol begins with inspection of both units. If only one shows evidence, we treat that unit and monitor the other. If both show evidence (or any shared-wall activity is found), we strongly recommend simultaneous treatment of both units.

Treating only one unit when both are infested almost guarantees re-infestation within 30 days.

When the owner lives in one unit and rents the other, the owner is typically responsible for pest control under Chicago's RLTO. When both units are owner-occupied (a relative arrangement), coordination is up to the families. We make scheduling both units on the same day easy and offer multi-unit pricing.

Free inspection of both units, written quote, same-day scheduling when possible, simultaneous heat or liquid treatment if needed. Full written documentation for both units and a satisfaction guarantee on bed bug work.