UNI TAB contains a blend of detergents, deodorants, and water conditioners in a solid, long-lasting block. It dissolves the crusty uric scale mineral deposits and hard water scale which harbor foul urinal odors. Automatic, self-deodorizing action keeps urinals extremely clean for up to six weeks. Prevents lime and scale from clogging urinals. Single-piece design eliminates the need for separate screens and blocks. Provides continual urinal maintenance. Contains acid-stable enzymes to enhance performance.