Moth urinal balls are small, round balls that are placed in urinals to control odors and keep the urinal clean. They are typically made from a mixture of chemicals that release a pleasant fragrance while also acting as a disinfectant to kill bacteria and germs. The balls dissolve slowly over time, releasing their fragrance and cleaning agents as they do so. In addition to controlling odors and keeping urinals clean, moth urinal balls can also help to prevent blockages in urinal pipes by breaking down and preventing the buildup of mineral deposits and other debris. They are a popular choice in public restrooms and other high-traffic areas where keeping urinals clean and fresh is important.