Yes, they change all surfaces they are applied to, creating an antimicrobial surface that prevents mold, fungus, bacteria, mildew and algae from growing. Since the product is applied by a unique fogging application, it can be applied to most surfaces that are not affected by minor contact with moisture. You should protect silks, rayon, original paintings and unplug any electronics prior to application. Carpets and flooring should be allowed to dry before walking on the surface. Windows should be thoroughly cleaned prior to treatment.