LISTERINE NATURALS Anticavity Mouthwash with Fluoride, Herbal Mint, 1Ltr Strengthen your teeth and eliminate bad breath germs with LISTERINE NATURALS Anticavity Mouthwash with Fluoride. This fluoride mouthwash helps build 50% stronger teeth than brushing alone.* It helps prevent cavities by restoring essential minerals to your enamel. It cleans the whole mouth, killing 99.9% of germs that cause bad breath. This 99% natural mouthwash with a refreshing herbal mint flavor contains no artificial flavors, sweeteners, or dyes.*In lab studies.