Star San is acid based no-rinse sanitizer that is easy to use, very effective, and super popular in the homebrewing community.
Made from a food-grade phosphoric acid it is safe for both people and the environment. In addition it odorless and has no flavor. It does not require dilution and is reusable so long as it is kept in a sealed container and the pH is 3 or lower.
Please note that Star San is an acid so avoid prolonged contact with metals, rubber, and plastic.