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Kitchen & Organic Waste·Yes (with restrictions)

How to Dispose of Cooking Oil and Kitchen Grease

Pouring cooking oil or bacon grease down kitchen drains is one of the leading causes of municipal sewer blockages, creating massive congealed fatbergs that cost cities millions of dollars. Liquid grease also fouls septic fields and ruins municipal compost piles.

Key Takeaway

Many municipal transfer stations offer dedicated bulk cooking oil collection tanks for free recycling into renewable biofuels. Always verify your local municipal hauler requirements before placing large items at the curb.

Step-by-Step Instructions

1
Allow the oil or grease to cool completely

Never handle hot oil directly from fryers or pans to prevent severe burn injuries.

2
For small amounts of bacon grease, freeze and discard in trash

Pour warm grease into an empty tin can, glass jar, or paper carton. Once solidified in the refrigerator or freezer, scrape into your trash can.

3
For large volumes of deep-fryer oil, collect in the original plastic jug

Strain food particles out using cheesecloth or a fine mesh strainer, then funnel cooled oil back into the container it came in.

4
Take large volumes to a municipal biofuel recycling station

Most municipal transfer stations accept clean used cooking oil to be converted into clean-burning biodiesel fuel.

⚠️ Important Rules to Avoid Fines & Hazards

  • Never pour oil or grease down kitchen sinks, toilets, or outdoor storm sewers.
  • Do not add animal fats or grease to backyard compost bins, as they attract rodents, raccoons, and flies, and do not break down aerobically.
  • Liquid cooking oil in open containers must never be placed loosely in curbside trash where it can spill during compaction.
Check your city’s exact bulk pickup dates and drop-off depots

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Frequently Asked Questions

Can you reuse cooking oil before throwing it away?▼

Yes, high-smoke-point oils like peanut, canola, or vegetable oil can be filtered through a coffee filter and reused two to three times for frying.

Can you pour cooking oil outside on dirt or grass?▼

No. Oil smothers plant root systems, kills beneficial soil microbes, creates foul odors, and attracts vermin.

What is a sewer fatberg?▼

A fatberg is a huge hardened mass in municipal sewer lines formed when cooking fats and oils combine with non-biodegradable wet wipes, causing sewage backups into homes.

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