This is the baseline treatment for any property. The technician walks the perimeter and the hot spots you point out, and applies product with a pressure sprayer on large surfaces: walls, floors, ceilings, baseboards, cracks and behind furniture.
Spraying is used only where food is not handled, with products registered for that use. In kitchens and prep areas it is combined with other methods.
In an average apartment or house the service takes 30 to 40 minutes. Nobody can stay inside during the application.