Seattle Public Utilities

Fats, Oils and Grease Disposal

Fats, Oils, and Grease Flyer

Cooking oil and grease resulting from food preparation in the home can build up in pipes and lead to sewage backups, expensive plumbing bills, and pollution in Puget Sound.

View a video of a clogged pipe due to cooking oil and grease.

Read our Frequently Asked Questions.

Sources of cooking oil and grease include:

  • Cooking oil (all types), butter, shortening, lard, and margarine
  • Oil/grease from cooking meats
  • Oil leftover after frying foods
  • Greasy sauces and mayonnaise
  • Mixed juice at the bottom of roasting pans
  • Gravy, sauces, and soups
  • Fatty food scraps
  • Floating fat (on water) after crock pot/Dutch oven cooking
  • Oil/grease from roasting or pan sautéing veggies or meat
  • Dairy products like milk, cream, sour cream,

Proper disposal of used cooking oil and grease:

The correct way to dispose of cooking oil and grease depends on the amount you have.

Cool oil and grease, then remove from pots and pans:

  • Small amounts of oil and grease can be wiped up by paper towels and placed in the compost.
  • Large amounts of grease can be scraped into a container, covered with a lid, and placed in the garbage.
  • Large amounts of liquid oil can be poured into a container, closed with a lid, and labeled with your address. Place the container of used cooking oil next to your recycling cart for curbside pickup.