A grease trap is a plumbing device designed to intercept and retain fats, oils, and grease (FOG) from wastewater before it enters the main sewage system. These traps are commonly used in commercial kitchens, restaurants, and food processing facilities to prevent clogs and maintain proper drainage. The operation of a grease trap relies on the principle of density. As wastewater flows through the trap, the lighter FOG rises to the top, while heavier solids settle at the bottom. Regular maintenance and cleaning of grease traps are essential to ensure they function effectively and comply with local regulations.