구탱구
저는 점심 저녁 사용하는데 회사에서 가끔 못할때도 있어서 저녁엔 꼭 하려고 하네요
They say it's good to floss every day, but it's a hassle and I often forget, so I can't do it every day.
Still, I think I make sure to do it at least once every two days.
How often do Unpa members use dental floss?