Urinal Blocks, Urinal Cake and Their Purpose
Urinal blocks or urinal cakes, as many call them, are small round blocks that look similar to a hockey puck, and lay in the bottom of a urinal to help control odors in restrooms.
Urinal blocks are air activated and are place above the drain in the urinal. When in contact with the air, they will dissolve providing the deodorizing properties controlling the odors. They do not dissolve in water and therefore they do not deodorize the flushing water or the urine.
The chemicals composing the urinal blocks will vary with the most common base chemical being Para dichlorobenzene, which is a paraffin, type chemical. However, this chemical has been recognized to have carcinogenic risks and now urinal blocks are available in a “free” version.
Each block is enhanced by saturating it with a scenting compound of fragrances such as cherry, which is the most common. A urinal cake comes in either 3 ounce or 4 ounce sizes, though other sizes are available. Each urinal block will last approximately 30 to 60 days.
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