I wiped the tatami mat with vinegar water. It prevent the shrill change of color of the tatami mat, and it is the harmful insect prevention to wipe with vinegar water. It is old wisdom.
I sleep in the room of the tatami mat. I like tatami mats.
However, rental apartments without the room of the tatami mat increase recently. We often move by work, but I am sorry that it became difficult to look for the new home having the room of the tatami mat.
