Upfront I'll tell you, I am aware that a manly man doesn't use mouth wash, except Jim Bean. Still, for your wife and kids who do, there is a product that is called Smart Mouth. It comes in two parts, two pump top bottles that are blended prior to use. It kills mouth bacteria for 12 hrs. So, why am I telling you this???
I have found that when bottle number one runs out, bottle number two still has about 10% of the product left. After three times of this I just called the customer service number on the bottle and they told me they were aware of the issue and were sending me a free bottle of number one.