Review (1/5): Floss pulls out of the plastic and the angle of the flosser makes it hard to use
The floss heads are fairly useless. The floss pulls out of the plastic part as you try to floss, this takes between a row of teeth and 1 tooth to happen. You'll need to use 2+ heads per time you floss. Additionally, the angle of the flosser makes using the ribbon head floss exceedingly difficult - if it were 90 degrees like the Listerine version, it would be way better. Because of the angle, you'll need to open your mouth extremely wide to floss your molars with the ribbon floss. With the combination of poor design with the remarkable fragility of the floss heads I recommend avoiding this brand.