Roebic Laboratories K-77 Root Killer, 32OZ Safe for all plumbing, will not harm septic tanks Saves costly digging and rooter service Not for sale in Connecticut, Massachusetts, the bay counties of California Banned for use in septic systems in Florida Destroys clogging roots fast Safe for all plumbing. Will not harm septic tanks Saves costly digging and rooter service Not for sale in Connecticut, Massachusetts, the Bay counties of California Banned for use in Septic Systems in Florida