dental floss

Every time I went to the dentist, the question I was always asked was whether I used dental floss. I hadn't really developed a flossing habit, but to help my children get used to it, I bought some expensive floss; however, they bled every time they used it... Eventually, after reading reviews, I saw a pack of 500 being sold cheaply on Coupang and bought it. It doesn't bleed and the floss is soft, so my children and I are using it very well.