Drop-In Tank Non-Para Cleaner Block, 24/Box

Dissolves as it cleans the bowl and blues the water. Cleaning block deodorants are water activated, counteract odors, and fight bacteria growth. Contain no parachlorides. Lasts for 1500 flushes. Deodorizer Type: Urinal Block; Scent: Unscented; Color(s): Blue.

Price: 27.98 from Zuma Office Supply US