I added the Ollie floss to my SmartClean brush order just to try it out, and I ended up really liking it. It's not highly flavored, which is good, and it really grips the tooth surface. It's a thin, flat ribbon floss that gets into the tight spaces between teeth just fine. Between the Ollie floss and my SmartClean brush, I feel like I just visited the dentist whenever I use them together. I will be buying more Ollie floss soon so I won't run out. So glad I tried it!