Clean with a soft cloth and mild disinfectant (warm water with mild detergent, Lysol, 70% isopropyl alcohol, or hydrogen peroxide). Water chamber can be cleaned by filling the control unit one-third full with hydrogen peroxide (off the shelf) and running the system for five minutes. Outer sleeves are hand or machine washable. When not in use, fold or roll the wrap(s). To prevent mold or mildew growth, do not store in enclosed plastic containers.