The power of SmartMouth™ is the activation. Pour the two solutions together to activate the Smart-Zinc™, which eliminates and prevents bad breath for at least 12 hours with each rinse. With regular, twice-daily rinsing, you should experience maximum effectiveness within 1–2 weeks. Re-rinsing is recommended after eating foods containing onion or garlic. Double spout activates both liquids with a single pour!