Flossing is all the rage these days. No, not the dance, though that’s a close rival. We mean the good, old-fashioned kind we do to keep our teeth healthy. But this is the 21st century! We’re not old-fashioned anymore! We’re over wasteful, mint-coated strings that cut into our gums and are totally disgusting after just a few passes down the sides of our teeth. We like a product that does the work ...