Works on odors caused by smoke, fire, cooking, pets, mold, mildew, urine, feces and other sources. Product chemically neutralizes odor causing molecules leaving a pleasant lilac fragrance that soon dissipates, but the odor controlling properties continue to work. Properly diluted, it can be sprayed directly on surfaces or fabrics without staining or residue. Can also be added to cleaning solutions to help eliminate odors as you clean. Four 1-gallon containers per case.