Removes the toughest stains. Kills 99.9% odor-causing bacteria. Cleans in just 3 min. Clean with Efferdent Power Clean Crystals daily to: Kill 99.9% of the germs that cause denture odor; Dissolves tough stains in hard-to-reach places; Reduce plaque buildup and remove food particles that can cause gum irritation; Keep dentures and partials (Do not soak metal appliances for longer than 3 minutes. Dentures can be soaked over night) extra fresh and clean. Questions? Call us toll free at 1-877-925-5374 or write to us at www.efferdentcrystals.com. A Prestige Brands company. Made in USA.