If you still have your tonsils, you may be one of millions of Americans who have tonsil stones. Sometimes as large as a grain of rice, these white or off-white stones are accumulations of dead bacteria and white blood cells that congregate around a fibrin capsule built by streptococcus bacteria during a bout of childhood tonsillitis. Watch the video below to learn more about what causes tonsils stones or watch this YouTube video: https://www.youtube.com/watch?v=x4DZCbqWgJc