Boardwalk Boardwalk Industrial Strength Alkaline Drain Cleaner, 32 oz Bottle, 12/Carton Penetrates clogging masses, converting to soft pulp that easily flushes through the system. Cleans and clears clogged drains. Removes organic matter, grease, paper, hair and lint. Harmless to plumbing and septic systems when used as directed. Not for use... MSRP: $41.69 Was: $27.82 Add to Cart Compare Quick view