Why Do the Japanese Place Water Bottles Around Their Homes?

Although scientific studies suggest that this method is not consistently effective, it remains a common sight in Japan. Beyond functionality, the bottles have also become a cultural habit—an example of how traditional practices can persist even without strong scientific backing. For many residents, it is a simple, harmless way to try to protect their spaces without using chemicals or traps.

In essence, the bottles are not for drinking water but for creating a visual barrier. This unique practice illustrates how creative, low-tech solutions can emerge in daily life, blending culture, tradition, and community habits.