Do not flush oil or tissue paper down the sewer!

If you pour oil, food waste, tissue paper, and other items down the sewer, it can clog the drainage pipes, making the kitchen, toilet, and bathroom unusable, and can also cause unpleasant odors.

• Used oil, mayonnaise, and similar substances should not be poured down the drain. Instead, absorb them with newspaper or similar materials and dispose of them as "burnable waste."
• Wipe off any oil or mayonnaise on the dishes before washing them.
• Use a drainage bag in the triangular corner of the sink and avoid flushing garbage down the drain.
• Do not flush anything other than toilet paper, as it can cause clogs.