Liquid treatment for septic tank. The environmentally friendly septic system treatment and drain care. Formulated in conjuction with CLR and Environmental Protection Agency (EPA). Uses only environmentally friendly ingredients. Doeas not contain any soaps, enzymes or emulsifying ingredients. Use in any drain or toilet. Goes to work instantly to biodegrade grease and organic matter. Restores the precise stability of healthy bacteria. Prevents and reduces sludge build-up. 828-ml bottle.