LISTERINE® Smart Rinse Mild Berry is a ZERO-ALCOHOL and SUGAR FREE formula which helps clean where brushing misses. LISTERINE® Smart Rinse Mild Berry: Contains Fluoride Contains fluoride which reduces cavities by up to 40% more than brushing alone. Fights bacteria Fights bad bacteria, a major cause of plaque and gum disease. Cleans Goes around the whole mouth, reaching teeth, gums and tongue. Attracts and tints the bits that brushing misses, showing your child the proof in the sink.