There are ordinary fog wipes and then there is patent-pending FogBlocker. This revolutionary new product designed by biotech scientists at the University of Massachusetts is a game-changer compared to older anti-fog solutions. A FogBlocker dry wipe can be used well over 500 times with effects lasting 24+ hours per wipe! Its ultrafine microfiber cloth can be safely used on any lenses including those that are coated. You can even apply it on all your PPE plastic guards and goggles.