Star San
Star San is an acid-based sanitizer that is quick, odorless, tasteless and safe for most materials except softer metals. Use of 1 oz per 5 gallons of water and a contact time of 1 minute makes Star San very economical and convenient.
As a high foamer, Star San's foaming action ensures coverage and contact time in larger vessels and better penetration into nooks and crannies. Any foam that is left over in your carboy or keg will not harm your beer or you, and is perfectly safe and non-toxic, nor will it impart any flavors or odors.