Hands-down our favorite sanitizer. Star San is a foaming acid anionic sanitizer that penetrates hard-to-see places. It’s a no-rinse sanitizer, which cuts down on time, does not stain, and does not impart flavors or off-aromas. Use 1/4 oz. per 1 gallon of water — that means you’ll get 32 gallons of sanitizer out of one 8oz bottle.