TST MAX - 21 oz.

For over 40 years RVers have trusted the odor-stopping power of TST. The name TST still guarantees the highest quality in sanitation treatments that contain no formaldehyde, are non-staining and are safe for septic tanks. Eliminates odors and lubricates sensors. 100% biodegradable and environmentally safe. Just 1 ounce treats 40 gallons. Contains 21 treatments.