Unique 411-1 RV Digest-It Holding Tank Treatment - 4 oz. ELIMINATES ODORS WITHOUT MASKING Many products claim they remove odors and they dont. They mask smells with foul fragrances or simply dont work. RV Digest-It works fast to eliminate odors in black and gray tanks using the perfect bacteria-enzyme blend DIGESTS WASTE QUICKLY With RV Digest-It you can stop worrying about clogs and backups. Our advanced, septic safe formula works quickly to breakdown waste ensuring your tanks empty easily and never backup. You can even stop using expensive RV toilet paper! FORMALDEHYDE FREE Stop using products with dangerous chemicals and overpowering fragrances that only mask smells and cause backups. Completely eliminate odors using the most advanced, strongest and best probiotic-enzyme strains available with RV Digest-It. TREAT YOUR GRAY AND BLACK TANKS IN ONE SMALL BOTTLE RV Digest-It employs the strongest, most advanced strains of bio-cleaners available in the highest concentrations so you get a premium quality product at an incredibly low price. No watering down! CLEANS SENSORS AND LUBRICATES SEALS AND VALVES RV Digest-Its advanced formula contains advanced cleaners that ensure your level guages remain working properly and your valves and seals stay lubricated and working properly.