AquaMax®, the no Formaldehyde, no Bronopol holding tank treatment.AquaMax® Holding Tank Treatment's advanced enzyme powered formulas neutralize odors and accelerate waste digestion to prevent clumping, clogging and tank residue, all at the same time. Thetford's beneficial probiotic treatments are Bronopol Free and Formaldehyde Free to provide campground friendly and California compliant solutions. Formaldehyde FreeBronopol FreeNeutralizes odorBreaks down waste to prevent clumping, clogging and tank residueEnzymes optimized for MAX performanceBeneficial probiotics; good bacteriaSeptic system safeCampground and Marina FriendlyCompliant with all current regulationsConvenient family of options; liquids, dry granules and Toss-Ins® One dose treats a 40-gallon holding tank