Raid Max roach killer kills bugs for up to 6 months. Spray around baseboards, into cracks and crevices, under sinks, in cabinets and refrigerators, on damp areas, and other places where roaches may hide. 2-way spray applies spray in hard to reach places or cover a wider area. If you see a bug, spray Raid Max roach killer directly on the bug for an instant kill. 14.5 oz aerosol can.