Urinal deodorizer blocks (commonly known as urinal cakes, urinal cookies, urinal biscuits (or humorously piscuits), urinal donuts, urinal mints, toilet lollies, trough lollies, urinal pucks, toilet pucks, lemon bon bons, or urinal peons (alternately urinal pee-ons)) are small disinfectant blocks or tablets that are added to urinals. As these products originally contained para-dichlorobenzene (pDCB), they may also be called para blocks.
Urinal deodorizer blocks (commonly known as urinal cakes, urinal cookies, urinal biscuits (or humorously piscuits), urinal donuts, urinal mints, toilet lollies, trough lollies, urinal pucks, toilet pucks, lemon bon bons, or urinal peons (alternately urinal pee-ons)) are small disinfectant blocks or tablets that are added to urinals. As these products originally contained para-dichlorobenzene (pDCB), they may also be called para blocks.
Source: Wikipedia "Urinal deodorizer block" · CC BY-SA 4.0
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