Spectracide Ant Shield Insect Killer Aerosol kills ants (excluding harvester pharaoh and fire ants) on contact and protects for up to 16 weeks. Use indoors and outdoors to kill listed ants carpenter ants cockroaches spiders brown dog ticks crickets scorpions and other listed insects. When using indoors contact as many insects as possible with the spray in addition to thoroughly treating all parts of the room where listed pests may hide. Pay special attention to cracks dark corners hidden surfaces under sinks behind stoves and refrigerators food storage areas and wherever listed pests are suspected. Treatment lasts up to 4 months. To kill listed ants treat doors around window frames ant trails and other areas of entry. When using outdoors thoroughly spray infested weeds or bushy non-crop areas. To kill listed ants thoroughly wet hills and runways.