All across the U.S. the build-up of fats, oils and grease (FOG) in sewer lines is one of the leading causes of sewer blockages. FOG is a by-product of cooking that can be found in: food scraps, meat fats, lard, cooking oil, bakes goods, sauces, dairy products, butter or margarine. Sewer blockages can cause harm to your home, business, our City's infrastructure and the environment. To learn about how to prevent sewer blockages, click here!