Disposal of cooking grease into storm drains has the potential to cause more havoc. The storm drains lead directly to streams and creeks, so discarded grease can also pollute the nearest water source.

Fats, oils, and grease (FOG) come 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.