PlumbRx Drain Opening Cups are pre-measured to eliminate any guess or mess. Just open a cup, pour it down your drain and flush with hot water. It's that simple.

With PlumbRx Drain Opening Cups, you get superior performance over regular drain openers. Its ultra-concentrated formula works quickly to liquefy hair, grease, soap scum, paper, organic matter & more!

PlumbRx Drain Opening Cups are safe for use in sinks, drains, showers, bathtubs, garbage disposals, urinals, toilets & more. It will not harm your drains, pipes, or septic systems.