Oil comes from plant sources such as vegetable oil, canola oil, olive oil, corn oil, etc. It may be used as a topping on food, such as salads or sandwiches or used to cook food, such as deep frying. It remains liquid at room temperature; used oil should be poured into a can or jar before disposal. If it is poured down the drain, oil can coat pipes and get into any nooks and crannies, creating a slick surface that makes it easier for fats and grease to stick to it.

Unclogging Strategy: Pour small amounts of used cooking oil into a jar or can with a lid before placing in the trash can. The City of Lawrence Household Hazardous Waste Facility accepts cooking oil for recycling. Hot water and soap do not eliminate oil; it will eventually reform in pipes. Read the FAQs for more ideas.



  • Salad Dressing
  • Cooking Oil
  • Vegetable Oil
  • Canola Oil
  • Olive Oil
  • Corn Oil