Our pipe dredge agent contains isopropyl alcohol, ethylenediamine tetraacetic acid disodium, sodium bicarbonate. It dissolves metal ions, softens and removes clogs. Dissolves grease and organic matter to facilitate dredging. Its use method is very simple: 1. Press down on the bottle cap, turn counterclockwise, open the bottle cap. 2. Pour proper amount of this product into the tube. 3. Wait an hour, then flush the pipe with plenty of hot water. Easily remove blocked drains and pipe clogs; The effect is obvious, easy to remove hard water deposits, improve the washing effect.