Sosa unclog ultra 500ml c02430 , powerful alkaline unclogger based on 50% sodium hydroxide. capable of removing jams and bad odor produced by remains of organic materials, such as rags, food, cellulose, paper, hair, soaps, fats and detergents. its monthly use prevents the formation of blocks and the appearance of bad odors in drains. does not attack pipelines or septic tanks. may damage certain materials. unecol