With SmartBlock™. Combining SoftSpike™ technology that diffuses liquid to eliminate splash and SmartBlock™ enzyme block technology that cleans and reduces odors in the restroom. Cleans and deodorizes for up to 60 days. Flexible EVA material fits all urinals and can be used in both dry or standing water urinals. Easy to replace, when enzyme block has dissolved completely it is time to replace the urinal screen. Packed with gloves for safe sanitary removal and replacement. Enzyme block is non-toxic and biodegradable. Can be used in any state. Ideal for high traffic washrooms.