Trusted by campers for 40 years, TST stops odor and lubricates sensors without staining your septic tank. Contains no formaldehyde and is 100% biodegradable. Available: 32-oz. liquid - 4 oz. treats 40 gal. 21-oz. granular - 1 oz. treats 40 gal. 32-oz. Orange Liquid - 2 oz. treats 40 gal. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Size: 32OZ ORANGE LIQUID. Color: Orange. Gender: Male. Age Group: Adult. Type: Treatment Chemical.