Item #: BGD660. White flexible screen traps debris; enzyme block cleans and deodorizes as you flush. Fights uric acid odors. Lasts up to 30 days. Dozen.Non-para block deodorants are water-activated, blue the water, counteract odors, and fight bacteria growth. Contains no paradichlorobenzene. Evergreen Fragrance Customers also search for: Non Para Extra Duty Urinal Screen - Toilet Products Urinal Screens