Our sewer blockage removal effervescent tablets contain sodium hydroxide and aluminium powder. It can thoroughly remove dirt, grease and so on. Keep the pipes clean and unobstructed, and quickly clean the pipes clogged with hair, food residues, oil stains or toilet paper. Its usage method is very simple: Put the effervescent tablet into warm water and wait for it to dissolve. Then, pour the warm water mixed with the effervescent tablet into the clogged pipe. After the effervescent tablet's effect time is over, rinse the pipe with a large amount of water. The ingredients are mild and the odor is light, without any unpleasant or irritating smell. It has a wide range of applications, including kitchen sinks, equipment bathtubs, underground drainage ditches, urinals, etc.