24 Hour bad breath prevention with a morning & evening rinse. Take fresh breath wherever you go! Alcohol free. The power of SmartMouth is in the activation. Mix the two solutions to activate the Smart-Zinc technology, which eliminates and prevents bad breath for at least 12 hours with each rinse. Rinse in the morning for fresh breath all day; rinse at night and wake up without bad breath. No morning breath! No other mouthwash can do this! At work, for travel or anywhere! Smart Mouth - Oral Health Laboratories.