Acid suitable RO (Resistant Orange) is ideal indoors as well as outside in UV areas as the materials are UV resistant. Food preparation areas and commercial kitchens where acid-based cleaners or diluted detergents are used are perfect applications. Machinery workshops where cutting oils are sprayed in the environment, automotive applications near petroleum-based chemicals or fumes, wineries, and breweries where exposure to natural citrus based acidic cleaners may occur are other applications.