All commercial businesses such as hotels, restaurants, and other facilities that wash greasy dishes on a large scale rely on grease traps to protect their drains. A grease trap collects everything that is dumped down the sink.
Time to unclog your brain and see how much you know about clogs. No, not the kind you wear on your feet. The kind that stop up pipes and send you dialing your favorite local plumbers such as The Gentlemen Plumbers.