Stretch liquid hand soap by refilling your pump dispenser 1/2 and 1/2 with a top brand and an off brand and adding a little mouthwash for extra germ killing power! It doesn't have to be used full thickness which a lot of people have known about and have touted watering it down some, but the mouthwash has 2 pluses. 1: it thins the soap a bit and 2: it adds a nice mint scent!
If you don't like the mint, you can add the mediciny kind or citrus or cinnamon. I add cinnamon during the holidays!