Effective Plaque Removal Both water flossers remove up to 99.9% of plaque bacteria that causes gingivitis, cavities, and bad breath from treated areas and are clinically proven to be up to 2X as effective as string floss for removing bacterial plaque and improving gum health. WATERPIK is the #1 water flosser brand recommended by dental professionals, and the Cordless Freedom water flosser is accepted by the American Dental Association (ADA) for safety and effectiveness. Ultra Plus The Ultra Plus water flosser delivers maximum performance and convenience with 10 settings, an on/off water switch on the handle, and storage for extra tips...