The same cleaning product that brewers love, but in an easy to dissolve liquid format. PBW (Powder Brewery Wash) is a non-hazardous buffered alkaline brewer cleaner. It's the cleaner of choice for many breweries, where it out performs more hazardous caustic chemicals without removing the flesh off your bones. PBW also will not corrode soft metals. It's effectiveness and ease of use has made it a go-to cleaning chemical for pros and home brewers alike. Add 1-2 oz per gallon of water.