Get your plumbing moving again with Instant Power Heavy Duty Drain Opener. That moment when a clog stops the flow in your sink shower or toilet can be extremely frustrating for any household. Whatever is causing the clog Instant Power Heavy Duty Drain Opener is there to help dissolve it and get your water flowing again. This economical dual hydroxide drain opener will tackle the toughest clogs and actively dissolve hair grease and other residue causing the pipe and drain blockage. And it keeps working until flushed with hot water. Heavy Duty Drain Opener is safe on all pipes and septic systems and has no odors or fumes. For optimal results we recommend using Instant Power Heavy Duty Drain Opener overnight or during another extended period of time when plumbing will not be in use. Our ridged 67.6 FL oz bottle comes with a sealed cap for your safety. Instant Power has been a trusted brand for over 50 years.