Fats, oils, and grease from meats, butter, margarine, lard, food scraps, sauces, salad dressings, dairy products, and cooking oil should never go down the drain or into the garbage because they clog sewer pipes. Instead, place small amounts into the Compost Bin. (Restaurants generate so much they have special services retrieving their oil vats, but for individual use, just place into your Compost Bin.