"Designed specifically for rubber respirator facepieces and other personal safety equipment. Large (5"" x 8""), individually foil-packaged towelettes contain 70% Isopropanol. Box is designed as a wall-mounted dispenser, or can be wall-mounted using the box holder. Or choose alcohol-free cleaning pads where the manufacturer recommends using a non-alcohol cleaning wipe. Active ingredient: Benzalkonium chloride. Will not harm even the most sensitive rubber facepieces."