Smilesaver™ Spray is a fast-acting cleaner for retainers, Invisalign clear aligners, mouth guards, dentures, night guards, and even toothbrushes! The peroxide-free formula tastes great and requires no rinsing. Just one pump eliminates up to 99.9% of bacteria in 60 seconds! Perfect for on-the-go use. Keep a bottle in your purse, your gym bag, and your backpack.