One of the most serious offenders when it comes to blocked drains, fats, oils and grease should never be poured down a drain. It coats the inside of your pipes, solidifying when cold to cause a major obstruction. It can even accumulate in the sewers, coagulating together to form a huge fatberg that causes disruption to your local infrastructure. Examples include:
A key factor when it comes to blocked drains, we strongly suggest that you refrain from disposing of these substances down the drain. Instead, pour used oil into a glass jar and recycle it when you next cook.