How to Dispose of Cooking Oil [6 Best Ways]

You may be wondering how to dispose of cooking oil? There’s usually a lot of cooking oil left over after we cook foods like deep-frying, browning ground beef, or frying bacon.

It’s tempting to throw it down the sink, but this can clog and damage the pipes, and if it’s poured outside on the ground, animals may get harmed.

Cooking oil can be a big environmental hazard if not disposed of properly. You may store your oil to reuse it later, but if it’s gone rancid, it will create a problem.

This blog post will discuss how to dispose of cooking oil environmentally.

Cooking Oil
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How to Dispose of Cooking Oil?

1. Reuse Cooking Oil

If you are deep-frying soon or frying frequently, you may save the cooking oil for later use. To eliminate any particles and crumbs, first, filter the oil through a coffee filter or several layers of cheesecloth. Then fill an airtight container with it and keep it in the dark until ready to use.

Knowing that you should reuse oil just once or twice is critical. Before using it, smell it; if it smells rancid, don’t use it. Remember that each time you reuse an oil, the potency of the oil decreases, and the smoke point (the temperature at which it will burn) decreases.

2. Pour into Disposable Container

Pour the oil into a non-recyclable container with a lid, let it cool completely, then throw it away.

Cardboard milk cartons and similar wax- or plastic-lined paper containers are excellent for common non-recyclable packaging. Styrofoam and other takeout containers are also excellent options.

3. Chill Until Solid

If you don’t want to use it, freeze or refrigerate the oil first to make it solid. Pour the oil into an ice-cube tray and place it in the freezer or refrigerator. The oil is ready to be disposed of when it may come out of a can intact in one piece.

Pour oil or grease into a coffee cup and put it in the fridge if you have less than a cup. Scoop it out and throw it in the garbage with a spoon once it has solidified. Then clean the mug using a paper towel or an old napkin before washing it.

4. Pour Small Amounts into Trash

If you have a little amount of oil, it’s OK to throw it in a half-filled plastic trash bag. Let the cooking oil cool before sealing the bag, and ensure no paper towels, food scraps, or other absorbent materials are included.

It helps to contain the oil by using paper towels, waste material, and other spongy things at the bottom of the bag so that it doesn’t ooze out through the bottom.

5. Recycling the Oil

Some recycling programs will take your used cooking oil if you want to go the extra mile. The oil can be converted into biodiesel, a renewable resource used as fuel for diesel engines.

Contact your local waste management company or environmental agency to find out if there are any recycling programs in your area.

6. Combine with Other Material

The best way to dispose of used cooking oil is to combine it with an absorbent substance like cat litter, sand, or sawdust and then soak up the liquid.

Save old oil in a reused container until it’s time to empty the litter box; mix it with the oil before discarding the waste.


Now you know how to dispose of cooking oil environmentally friendly way. Reuse, recycle, or combine it with another substance to soak up the liquid. Whatever you do, make sure you don’t pour it down the drain.


What is the smoke point of an oil?

The smoke point is the temperature at which it will burn. Each time you reuse an oil, the potency of the oil decreases, and the smoke point decreases.

How do I know if my oil has gone rancid?

If it smells bad, it’s probably rancid. If you’re not sure, taste a small amount; if it tastes bad, don’t use it.

Can I pour oil down the drain?

No, don’t pour oil down the drain. It will clog your pipes and could cause a fire.

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