Prevents clogging of inlets and outlets in cesspools. Accelerates the breakdown of sewage waste. For use once a year to prevent clogging. Use in cesspools, drywells and any system which gets air. Use after cesspool has been pumped. Also known as activator, booster or starter. For clogged drains use Emergency K57. Watch Roebic NRA 2010 video on Vimeo.