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Blue Monster Non-Acid Drain Banger devours hair, grease, soap and oils that slow and plug drain lines in less than 60 seconds! This professional-strength drain opener is powerful and fast acting. Drain Bangers unique formula is embedded in blue flakes that work more effectively than liquid drain openers or beads. It is highly concentrated and when used as directed, will not cause rock-like masses, commonly referred to as "caustic clogs" that other forms of this type of product can cause. Contains no acid.