Urinal screen with block keeps urinals in excellent condition to reduce cleanings. Dynamic design can be used in both dry and standing-water type urinals. Bleach assists in the breakdown of uric salts leaving the base and the throat of the urinal clean and odor-free. Unique construction allows fluids to drain properly while preventing clogs. Long-lasting formula provides up to 60 days of use. Urinal screen is acceptable for use in all 50 states.