Recent reports in Japan highlight the rise of mold infestations within homes due to summer-type dew condensation. These infestations often go unnoticed until drastic measures are required, potentially jeopardizing the health of residents. The phenomenon, more prevalent in the summer season, is triggered by differences in temperatures between the indoors and outdoors, leading to condensation within the walls and fostering mold growth.

Considering the importance of communal harmony and cleanliness in the Japanese culture, mold infestations are a major concern for residents. In addition, health hazards associated with mold exposure are a significant worry. The Japanese legal system holds landlords responsible for taking preventative measures and for proper maintenance of rental properties, including combating mold.

Like Japan, the U.S and EU also take the issue of mold seriously. In both regions, landlords are generally responsible for addressing mold issues, although laws can vary. Awareness campaigns about mold risks are also more prevalent in Western societies than in Japan.