Urinal Cakes: Why?

Urinal cakes, also known as urinal deodorizer blocks, are used to reduce unpleasant odors in urinals. They work by masking the smell of urine, which can vary based on diet, health conditions, and dehydration. Historically, urinal cakes were made from naphthalene, but due to health concerns, many now use paradichlorobenzene. Both chemicals are effective in reducing odor but pose potential health risks, including being possible carcinogens. The video explains the function, history, and safety considerations of urinal cakes.

What harmful effects can naphthalene have on humans?

Why is paradichlorobenzene used as a replacement for naphthalene in urinal cakes?