1Kg Caustic Soda Drain Cleaners & Unblockers Powder Kitchen Sink & Drain Cleaner Effectively Clears Blocked Drains Also Use For Cleaning Pathways Driveways Exterior & Brickwork 1Kg Caustic Soda Drain Cleaners & Unblockers Powder Kitchen Sink & Drain Cleaner Effectively Clears Blocked Drains Also Use For Cleaning Pathways Driveways Exterior & Brickwork