Zep Commercial, 32 OZ, Toilet Bowl Cleaner and Deodorizer, Wintergreen fragrance and green product color. Ready To Use, Cleans Stubborn Bowl Stains, Deodorizes, 2 times thicker formulation clings even better to vertical surfaces; specially formulated to require less scrubbing. Quickly removes rust, dissolves organic stains and eliminates hard water residue from toilets and urinals ??? formula tackles the hardest stains! Safe for septic tanks, drain lines and water-treatment systems.