When we see the nylon toothbrush on the Toothbrush Visa Gift Card we should all thank the DuPont people for developing nylon. Prior to 1938 a variety of plant and animal fibers, including horsehair and bristles from pigs. Before brushes, people used a variety of sticks and compounds, such as salt and soot, applied with a cloth. When kids complain about having to brush their teeth tell them what a privilege it is! Toothbrush Visa Gift Cards make a great reward for a “no cavities” report from the dentist.