Grease trap pumping is much like having a septic tank pumped. It needs to be pumped regularly to keep the grease trap in good working condition. It is essential to have grease traps pumped regularly and thoroughly to remove the FOG (fats, oils and grease). FOG can build up on the walls of the grease trap. The walls may need to be scraped to remove the buildup. This should be done by a grease trap cleaning service company to ensure the grease trap is properly cleaned and the waste is disposed of appropriately.