Pipeline Dredging Cleaning Powder To Dissolve And Dredging Sewage And Drain Grease Blocking Deodorant PowderOur pipe cleaning powder (boxed) contains sodium hydroxide, aluminum powder. It can quickly and effectively eliminate the blockage of drainage pipes and restore the smooth flow of pipes. Its use is simple: Pour the right amount of powder into the tube and wait 15 30 minutes for it to dissolve. Flush the drain pipe with hot water to remove the blockage. And the use of safe ingredients, harmless to drainage pipes, suitable for a variety of pipes.