I have to say that I got my samples and I'm really not impressed. Maybe I'm not doing it right or whatever, but it doesn't really feel like it does anything for me and it's a bit awkward to use (probably I need to get used to it). Also, I was an idiot and thought "well, if it's thin enough, maybe i CAN go between my gum and my teeth with this thing" and so I did it, and cut my gum just a tiny bit (really - it was NOTHING serious) and so I say don't be a fool like me and try to make this product do more than it should. LOL
I think, for me personally, I'm going to try the stiff-end floss by Crest and just work with that.