Non-Chemical Instant Drain Opener for All Diameter Drains Powerflo is a versatile drain opener designed for both commercial and residential use. Its unique propellant formula rapidly expands in water, creating a standing wave that uses hydraulic pressure to push through blockages. Unlike traditional methods, Powerflo avoids using air pressure or harsh chemicals, ensuring it targets only the blockage without shooting up vent pipes. Each can provides approximately 18 applications, making it a cost-effective and environmentally friendly solution. Free from harsh chemicals, acids, CFCs, or lye, Powerflo is safe for your home and the environment. Application Instructions For best results, ensure water is present in the blocked fixture. Submerge the grey plastic cap below water or add water separately. Do not remove standing water. Block overflow vents or opposite sinks with a damp rag, position the Powerflo can (with the included 3-part kit) upside down over the drain opening, and press firmly for one second. For slow-moving drains, hold the can for a few extra seconds. Capabilities: Unblocks drains up to 50' down a 1.5" drain line. Works on drains as wide as 6", reaching depths of 12'. Safe for ground water, with no contamination risk. Includes a 3-part kit for use on various drain types. Effective for blocked or slow-running drains. No acids or dangerous chemicals used. Compressed gas formula ensures instant results without vent travel.