Urinal deodorizer block

Urinal deodorizer blocks (commonly known as urinal cakes, urinal cookies, urinal biscuits (piscuits), urinal donuts, toilet lollies, trough lollies, urinal mints, urinal pucks, hockey pucks, toilet pucks, or urinal peons (pee-ons) are small disinfectant blocks that are added to urinals. Those containing para-dichlorobenzene (pDCB) may be called para blocks. Besides disinfecting, the purpose of these blocks is to reduce or mask odors from restroom urinals. They are placed above the urinal drain, often in the confines of a small plastic trap (urinal screen) that prevents their loss down the drain when they dissolve to a small size. rdf:langString