Removes Stains & Plaque Clinically Proven! Removes difficult stains, food & plaque between teeth, helping prevent gum disease. Easier to use than floss. Patented handle with stackable caps for greater reach. Fights bad breath. Recommended by dentists! StaiNo Interdental Brushes contain TSR-1010® the only clinically proven advanced stain removal technology that quickly and safely eliminates stains, including tobacco and coffee, between teeth. StaiNo Interdental Brushes also effectively remove food particles and plaque between teeth helping prevent gum disease.