POWERFUL BUILD-UP REMOVER: Zep Drain Defense Powder dissolves stubborn residue and organic matter to restore free-flowing drains throughout your home.

18 OZ POWDER FORMULA: One 18-ounce container of powdered build-up remover is safe for PVC pipes, garbage disposals, and septic systems while protecting against corrosion.

IDEAL FOR BATHROOM & KITCHEN DRAINS: Use monthly in sinks, tubs, showers, and disposal units to prevent clogs and maintain optimal water flow in residential plumbing.

BIODEGRADABLE & PIPE-SAFE: The biodegradable formula cleans without harsh chemicals, extending pipe life and keeping septic systems balanced and odor-free.