US Patent No. 8,536,107 B2; Reckitt Benckiser has patented an article for use in a dishwasher that comprises a water-soluble zinc containing glass or ceramic composition, which is at least partially in the form of a shaped body, effective to reduce corrosion of glassware, and a surfactant containing composition. The amount of the glass or ceramic composition is within the range of 5 to 95 weight percent and the amount of the surfactant is in the range of 5 to 95 weight percent. The article is held in a container having perforated walls to allow a controlled circulation of wash liquor in and out of the container. The container comprises compartments to hold the glass or ceramic composition and the surfactant composition separately.