The invention is dental floss applicator and interdental stimulator that is flexible and also includes a guard to ensure that the dental floss has not been used or otherwise tampered with. Users can adjust the angle of the dental floss applicator and stimulator into a configuration that best suits their particular needs. When flex adjusted, the applicator is able to hold its new configuration while maintaining sufficient strength to allow the user to comfortably maneuver the apparatus to properly floss the teeth or stimulate the gums. Furthermore, the invention is disposable, rendering it convenient to use after a meal when the user is away from a private bathroom setting, such as at a home or other lodging.