We give a 1 to listerine zero but we place it to the left of the zero = 10 !!
My kids have used mouth wash since they were six. we all have hated the alcohol that some of them have. when we found this one that didn't have alcohol but yet was strong enough as if it did, why not try it. once we tried it, we all loved it. one think that i personally do not like; however my kids think is fun, are the bubbles it makes when you gurgle. other than that, it is awesome. the minty flavor will last in your mouth for a long time.