Star San is no rinse sanitizer and the most popular. A little goes a long way, only use 6ml per gallon of water.
Star San is odourless, flavourless, and requires only one minute of contact time. This product does tend to foam, which has advantages and disadvantages. The foaming can actually help sanitize cracks and crevices.
You can also dilute the ratio into a spray bottle for utensils and caps etc for on the go items that need sanitizing.