Black Flag Dry Ant and Roach Killer Aerosol, 9-Ounce USE INDOORS: Protects your home from ants, roaches and other listed insects. DRY FORMULA: Leaves no oily residue and no odor. FLUSHES OUT INSECTS: Extension tube (included) helps direct spray into cracks and crevices. KILLS UP TO 6 MONTHS: Residual formula keeps on killing for 6 months against German cockroaches. GUARANTEED: Guaranteed to work or your money back. See product label for details.