Our scale cleaning effervescent tablets contain sodium bicarbonate， citric acid and sodium dodecyl sulfate. It can deeply clean hard-to-reach nooks and crannies and restore surface shine. In the cleaning process， it can prevent the deposition of scale; A natural mild abrasive that removes stains and odors without damaging most surfaces. It has good decontamination performance and can effectively remove grease， dirt and other pollutants. Its use is simple: 1. Take an effervescent tablet， place it in a basin of hot water and wait for it to melt 2. Wash the area that needs to be descaled with the solution， then rinse it off with water. Scale cleaning effervescent tablet strong formula， can quickly dissolve hard water caused by scale and calcium scale. Just put it in the water， no scrubbing， save time and effort.