Only 25% of your mouth is brushed, and every one to two hours, the bacteria that remain after brushing multiply. To help keep teeth naturally white and stain-free, LISTERINE® Advanced Tartar Control Mouthwash is specially formulated to reduce the build-up of tartar. It fights bacteria between teeth, prevents and lessens gingivitis, and freshens breath. Use LISTERINE® Advanced Tartar Control Mouthwash to finish the cleaning!