Why Place a Glass and Paper Over Your Sink Drain Before a Vacation?
The image above shows a stainless steel kitchen sink with a piece of white paper covering the drain and a clear glass placed upside down on top of it. The text explains that a person’s in-laws recommended this trick before going on vacation, and they are curious to know the reason behind it.
This is a practical and well-known household tip. While it may look unusual, the setup serves a specific purpose: preventing odors and pests from entering your home through the plumbing system while you are away.
The Problem: Evaporating Water and Sewer Gas
Every sink drain is equipped with a U-shaped pipe called a P-trap. This pipe is designed to hold a small amount of water at all times, creating a seal that blocks sewer gases and prevents them from rising into your home.
When you go on vacation and do not use the sink for an extended period, the water in the P-trap can evaporate. Without this water barrier, sewer gases—which can be unpleasant and potentially harmful—can travel up the pipes and into your kitchen. The open drain also provides an entry point for small insects, such as drain flies or fruit flies, to enter your home.
How the Paper and Glass Trick Works
The combination of paper and a glass creates a simple but effective barrier:
The Paper: A piece of paper (or a paper towel) is placed over the drain opening. This acts as a physical cover, blocking the direct path for gases and insects.
The Glass: An upside-down glass is placed on top of the paper. The weight of the glass holds the paper in place and creates a seal that helps prevent air exchange between the drain and the room.
Together, these two items create a temporary seal that keeps odors and pests out while you are away.
Alternative Methods
If you do not have paper and a glass available, there are other ways to achieve the same result:
Rubber Drain Stopper: A simple rubber stopper can be placed over the drain to create a seal.
Plastic Wrap: A piece of plastic wrap secured with a rubber band can also work.
Pouring Oil: Some people pour a small amount of cooking oil into the drain. The oil floats on top of the water in the P-trap and slows evaporation.
A Simple Solution for Peace of Mind
This trick is a great example of how a small, inexpensive action can help maintain a home. It requires no special tools and takes only a moment to set up. By taking this step before you leave, you can return to a fresh-smelling kitchen rather than one filled with unpleasant odors.
