After you fry up a batch of bacon, are you left with a large amount of grease in your frying pan? What do you do with that afterward? Some will just pour it down the drain. It might be tempting, considering that it seems to flow so smoothly, but that is one of the worst things you can do for your plumbing.
Even though that grease looks very liquid when it is hot, it turns into a solid very quickly when it hits the water in your drain. Grease clogs can be very stubborn since they repel water and collect all kinds of debris.
This is why it is better to find an alternate method for disposing of that grease. You can pour it into a container to let it cool down for you to throw out later. You can leave it in the pan and scrape it into the garbage when it solidifies. Some even choose to use it for cooking, which might not be the healthiest option, but it sure is tasty.