We really like that the floss is 100% compostable. The glass container works well. We tried the charcoal floss previously and it was stronger. This floss requires care as otherwise it breaks quite easily. I go through two pieces each time I floss. I have a piece of floss stuck between two teeth and will soon need to buy old plastic floss to try and get it out and keep for close together teeth. Will use up both refills and return to charcoal version.