Grease is a byproduct of cooking that comes from meat fats, lard, oil, shortening, butter, margarine, food scraps, baked goods, sauces and dairy products. When washed down the sink, grease sticks to the . insides of sewer pipes (both on your property and in the street).

What is the source of grease?

Grease, thick, oily lubricant consisting of inedible lard, the rendered fat of waste animal parts, or a petroleum-derived or synthetic oil containing a thickening agent. White grease is made from inedible hog fat and has a low content of free fatty acids.

Where does fats oils and grease come from?

Fats, oils, and grease (FOG) comes from meat fats in food scraps, cooking oil, shortening, lard, butter and margarine, gravy, and food products such as mayonnaise, salad dressings, and sour cream. FOG poured down kitchen drains accumulates inside sewer pipes.