Listerine is joining Oral Health America (OHA) to kick off the Listerine 21 Day Swish Challenge, designed to help provide dental care for at-risk children.
Beginning February 5, people are invited to sign up for the challenge on Facebook, according to the organizations. For every person who signs up, Listerine will make a contribution to OHA to connect up to 210,000 at-risk children with needed oral health services in 2013.