Restaurants sometimes assume that having a grease trap serviced covers their grease management needs entirely, but a grease trap and a grease recycling program are handling two separate waste streams, and most kitchens need both to stay ahead of problems.
A grease trap is installed in the drain line itself, and its job is to catch fats, oils, and grease that make it into the wastewater before they reach the sewer system. It fills up gradually with everything the trap intercepts, which is why it needs a regular pumping and cleaning schedule of its own.
Grease recycling handles a different stream entirely: the used cooking oil from fryers that a kitchen collects separately and never sends down the drain in the first place. That oil goes into dedicated collection bins or containers and gets picked up on its own schedule for recycling.
A kitchen that only manages one of the two is still exposed on the other side. Skipping grease trap service means fats and oils that do reach the drain build up and eventually clog the line. Skipping a recycling program usually means more used oil ends up poured down a drain out of convenience, which defeats the purpose of having the trap at all.
