Proper grease trap maintenance is vital to maintain its efficiency. First, check with your city of active authority. Many have specific ordinances in effect, which will give you your necessary pumping requirements and other vital information. Violation of these ordinances could result in fines from the city or other active authority. Additionally, maintenance prevents problems such as foul odors, backup, line blockages, and overflow from being deposited into sewer lines, which is a finable offense.