With BioBlastPlus™ odor control technology Biological enzyme/bacterial formula that performs in all temperature conditions Chemical Free Completely Biodegradable Liquefies All Waste and Toilet Paper Works in Black and Gray Tanks Keeps tanks clean with a fresh clean scent 1 pouch per 40 gallon black or gray water tank treatment Accepted at all campgrounds and enhances septic tanks ‚Äì CA compliant