Keep black and gray tanks fresh with this biological waste digester and odour control. One 1.25-ounce bottle treats up to 40 gallons of tank capacity. The biological formula is formaldehyde-free and digests waste and toilet paper while neutralizing odours in both high and low temperatures. Simply pour into the tank and let the enzymes work. Fresh scent formula keeps your RV comfortable and odour-free.

• Biological waste treatment
• 1.25-oz bottle treats 40 gallons
• Formaldehyde-free formula
• Fresh scent
• Works in black and gray tanks
• Effective in all temperatures