Our drain blockage effervescent tablets contain baking soda, lemon extract, sodium hypochlorite It can quickly degrade hair, food waste, grease and toilet paper It is non-toxic and does not contain bleach or irritating ingredients; it will not produce pungent odors, irritating fumes or splashes; it is suitable for kitchen sinks, bathroom bathtubs, floor drains, urinals, etc ; only need to be used once a month to keep the pipes unblocked Its use method is very simple: open the package and put the effervescent tablet into the drain; add 0 5 liters of hot water to the drain; wait 10-15 minutes for the effervescent tablet to dissolve, and then rinse with plenty of clean water The drain blockage effervescent tablets clean the dissolved blocked area at one time, break the stubborn blockage, no pungent odor, no water splashing, unclog drains, pipes, etc , non-toxic and easy to use 10pcs Drain Blockage Effervescent Tablets Anti-blockage, sewer dredging, pipe dredging Content: 238g Ingredients: baking soda, lemon extract, sodium hypochlorite