This concentrated 2-in-1 formula cleans your toilet bowl while treating your waste tank in one step. Drop each packet into the bowl, let the effervescence and citric acid work for 10 minutes, then swab and flush to activate waste tank treatment.

The bacterial and enzymatic blend neutralizes odours and maintains tank cleanliness across both high and low temperatures, with a fresh, clean scent.

• Biological formula with no formaldehyde
• Fresh scent odour control
• Treats up to 40-gallon tanks
• Eight 2-ounce packets per package
• Marine-rated application