What I like about listerine, of all flavors, is that they really give your mouth a really fresh, clean feeling that lasts for a really long time. It's a bit hard to keep in your mouth at first as it tends to burn, just because it's so strong and I think it might have a pretty high alcohol content, but I like to think of it as the more it burns the better it's working. I think it's best to swish it around for about 30 seconds to a minute after brushing and you will instantly feel refreshed and cleaner. It's definitely a great way to boost your normal brushing routine and you will be rewarded in the health, cleanliness, and overall freshness of your mouth. I'm not 100% either but since it helps kill germs, I think I've noticed a reduction in sniffles and overall cold-like symptoms since I've been using this product religiously. I think if you are consistent you will definitely reap a lot of benefits and though people often forget it, mouthwash is an important part of your oral hygiene.