Valterra Pure Power Blue Bio-Pouch With BioBlastPlus odor control technology features a biological enzyme/bacterial formula that performs in all temperature conditions. One pouch treats a 40-gallon black or gray tank.• High and low temperature odor control• Liquifies all waste and toilet paper• 1 pouch per 40-gallon black or gray water tank treatment• Accepted at all campgrounds and enhances septic tanks â CA compliant• Keeps tanks clean with a fresh clean scent• 12 pouches in a handy, resealable package One pouch treats a 40-gallon black or gray water tank Accepted at all campgrounds & enhances septic tanks California compliant Keeps tanks clean with a fresh clean scent | Valterra Pure Power Blue Bio-Pouch Waste Digester and Odor Eliminator, CA Compliant, 12-Pack