TropiClean Fresh Breath Advanced Whitening Gel is now with 3D MicroGuard, a synergy of powerful natural ingredients that work at the micro level to dissolve plaque & tartar. This gel destroys bad breath and defends against new formation. Bad breath can be one of the first signs of periodontal disease. And because dogs can't speak, bad breath is the only way they can tell you they're in pain. TropiClean Fresh Breath Advanced Whitening Gel begins working immediately to address advanced plaque and tartar buildup - without brushing. This proprietary blend of natural ingredients also helps soothe minor gum irritations, promoting overall periodontal wellness.