It gets thrown down the drain in the kitchen sink, or carelessly flushed down the toilet.
It's also harming the environment by clogging home plumbing systems.
In an effort to encourage residents to find new ways to dispose of cooking oil, county officials are hosting public meetings on a "neighborhood-based project to recycle residential used cooking oil," according to a news release from Hillsborough county.
"People are disposing of the oil down the drains or flushing it, and it can cause environmental issues," said county spokesman Steve Valdez. "So, we're starting a program."
The Cooking Oil Recycling Effort, or CORE, will place cooking oil collection cabinets in various parts of northwest Hillsborough county, offer residents free recycling jugs and provide locations to drop off filled containers of oil.
Public meetings will be held on Sept. 24 in the Lutz/Carrollwood area and Sept. 26 in Town N' Country about the initiative, and county representatives will attend to answer questions.
What do you think about CORE? Tell us in the comments.