A new twist on holding tank treatments, AquaBio offers today's RVers a formaldehyde and bronopal free formula. This next generation of holding tank solutions is campground-friendly and complies with California regulations. The quick-acting holding tank treatment eliminates odors while digesting waste and toilet paper to prevent clogging, all without any harsh chemicals. Thetford AquaBio is formulated and tested safe for all RV toilets, holding tanks, and septic systems. Proudly made in the USA.• No formaldehyde; no bronopal• Eliminates odors and digests waste• Safe for septic systems• Campground-friendly• California-compliant• Fresh citrus scent Eliminates holding tank odors Digests waste and toilet paper to prevent clogging Fresh citrus scent | AquaBio RV Holding Tank Treatment, 8 Dry Packs Made in USA