Yes, oil can destroy pipes by solidifying, coating pipe walls, and trapping food waste, leading to major clogs (fatbergs) in your home's plumbing or city sewer lines, causing backups, damage, and costly repairs, and it should never be poured down the drain. Instead, dispose of cooking oils and fats by letting them cool and harden in a container, then throwing them in the trash, or wiping them out with a paper towel before washing dishes.
When you continue to flood your pipes with oil and grease — even only a little at a time — the solid fat mass accumulation will only continue to build up, narrowing the pipes' diameter, preventing smooth, quick drainage, backing up your sink and causing increasingly serious clog issues.
Yes -- pouring oil down the drain is harmful. It clogs pipes and sewers, damages wastewater systems, contributes to fatbergs, and contaminates waterways and treatment plants.
In some cases, a heavy grease buildup can clog a drain within a few weeks, especially if large amounts of cooking oil and other greasy substances go down the drain frequently. On the other hand, smaller amounts may take a few months to form a full blockage.
Don't pour olive oil down your drain It will lead to clogs by making your pipes sticky. Put it in an unbreakable container and throw it in the trash.
Maintain clean pipes.
Use white vinegar to maintain clean kitchen and bathroom drains. Periodically, pour a half cup down the drain, let it sit for at least an hour (the longer, the better), and then run water down the drain. Add baking soda to break up clogs.
Disposal options
For small amounts, pour cooled oil in a container with secure lid. Dispose of in the rubbish bin. For commercial quantities find a business that specialises in the collection of oil, such as: Waste Away Ph: 6260 1288.
Plumbers advise against using chemical drain cleaners because they corrode pipes (especially older metal ones), pose serious health risks (burns, fumes), harm the environment, and are often ineffective on tough clogs, potentially making the problem worse by sitting in the pipe and creating hazardous situations for plumbers who then have to clear it.
You can often use boiling hot water and white vinegar to dissolve grease in a drain. Use oven mitts and protect your eyes while pouring a 1:1 mix of hot water and white vinegar down the clogged sink. Watch the drainage rate to see if water is draining more quickly.
While WD-40 won't serve as a long-term solution for severe clogs, it can help with minor blockages caused by hair, soap scum, or grease build up. This is a short term solution and while we think WD40 is wonderful, we would prefer that customers don't continuously use it down the drain as it is bad for the environment.
Throw it in the trash
Toilets, sinks, and floor drains are all off-limits as gluey oils and animal fats will destroy your plumbing. Instead, turn to your garbage can. Cooled, solidified oil can be thrown in the trash once it is placed into a sealed container.
Whatever you do, don't be tempted to simply pour your oil onto the ground or down the drain. If you do this, you're not only polluting the environment - you're also breaking the law and are at risk of being prosecuted. To dispose of your oil legally and safely, you'll need to find your local oil bank.
You should never pour used cooking oil down any drain, including sinks and toilets. Oil solidifies in water and will cause a clog in the pipes. If the cooking oil reaches the sewer, it can cause clogs in the municipal sewer lines which result in expensive damage that can cost thousands of dollars to fix.
Once your used oil has been properly contained, keep your container in a place that's cool, stays dry, and where it won't be disturbed before you have a chance to hand it off to a recycling facility or an AutoZone near you.
How to Dissolve Grease in Pipes Safely
Pour Boiling Water Down the Drain
The hot water will melt grease, causing it to exit your pipes. However, boiling water alone may not be enough to do the job because oil and water repel each other. For more grease-fighting power, add a few drops of dish soap to the water and mix well until the solution is bubbly.
You might think it's harmless to pour a bit of oil down the drain, but the reality is far from it. Doing so can have serious implications for your home's plumbing and the sewer system. The oil can solidify and create blockages in your pipes, leading to slow drainage and even backups.
For the toughest of clogs, a plumber may use a hydro jet. This tool sends pressured water through pipes to break down drain build-up. This tool is often faster and more efficient than a typical drain snake. Hydro jets get rid of the clog, but they're also effective for cleaning drains.
Use baking soda and vinegar monthly
Pour ½ cup of baking soda into the drain, followed by 1 cup of vinegar. Let it sit for 15 minutes, then flush with hot water. Unlike harsh chemical cleaners, this won't corrode old pipes.
You should never flush wet wipes (even "flushable" ones) or sanitary products (tampons, pads), as they don't break down like toilet paper and cause major sewer blockages; other common culprits include paper towels, tissues, cotton balls, hair, dental floss, and cooking fats/oils, which all contribute to clogs and "fatbergs".
Unlike surface clogs, which affect individual fixtures, a deep blockage impacts multiple drains at once, leading to more serious plumbing problems. If you notice slow drains, unusual backups, or foul odors, these could be signs of a deep blockage that requires immediate attention.
Surely you can pour it into your garden beds once it's cool? Nooooo! Unless you want to be overrun by pests who like nothing more than a bit of cooking oil for dinner! Used cooking oil can contaminate the soil, making it difficult for plants to absorb nutrients and grow properly.
To recycle cooking oil, restaurants often partner with specialized services that convert used oil into biodiesel, a cleaner and more sustainable fuel alternative. There are many benefits of recycling used cooking oil, such as promoting a sustainable and environmentally conscious approach to waste management.