Here's why you should always leave an upturned glass and a piece of paper in the sink before going on vacation

Unpleasant odors coming from the pipes.

Insects (flies, ants, cockroaches) that take advantage of the humidity to come up into the kitchen.

Condensation and stagnant humidity.

Siphons that evaporate, especially at high heat, eliminating the natural odor barrier.

The result: upon returning, instead of finding a fresh and welcoming interior, you're greeted by a smelly breeze as soon as you open the door. Not exactly the best way to prolong the magic of your vacation...

The Upside-Down Glass Trick: How Does It Work?
This simple trick involves placing a sheet of absorbent paper (such as paper towels or dishcloths) over the sink opening, then placing an upside-down glass on top.

This forms a physical barrier that prevents stale air, small dust particles, rising gases, or even insects from entering your kitchen.

According to Loïc, a plumber for 18 years in the Landes:
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