TST Blue Enzyme Toilet Chemical Singles, 8-4 oz. Bottles. Specially blended enzyme formulation digests waste and tissue. Helps suspend waste and reduce potential system clogs. Takes only 4oz to treat an entire 40gallon tank in any season. Cleans holding tank surfaces and probes. Safe for all septic tanks.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov