Black Swan Drainstar is a professional-strength liquid drain and sewer opener that quickly dissolves the organic buildup causing slow or blocked drains. Powerful potassium and sodium hydroxide formula works on residential and commercial plumbing systems.

• Dissolves hair, grease, paper, lint, and other organic matter on contact
• Works in drains, traps, septic tanks, and cesspools
• Use regularly as preventive maintenance to keep drains flowing
• Liquid formula flows directly to the clog source
• Potassium and sodium hydroxide active ingredients
• 1-gallon size for extended use or multiple drain treatments

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