Bought with my own money - Dental floss

I didn't use dental floss before, but when I went to the dentist for a scaling last year, they taught me how to use it. So I gave it a try, and I wondered why I hadn't known about this sooner. When food gets stuck in your teeth, there are limits to what a toothpick can do; if you poke yourself wrong, it can even cause bleeding. Using floss, however, easily removes food particles that don't come out easily with just brushing, and it even gets rid of debris I couldn't even feel.