Max Control Holding Tank Deodorant – 12 Pack of 1.5oz PodsMax Control Advanced formaldehyde-free formula.  Long lasting treatment eliminates and controls holding tank odors by breaking down waste and toilet tissue. Features:1 Ounce per 10 Gallons of Holding Tank CapacityFormaldehyde-Free Formula100% biodegradable12 Pack of 1.5oz. podsNew Item # 9108844944 *Sold by the 12 Pack WARNING: This product can expose you to chemicals including ARSENIC which is known to the State of California to cause cancer or other reproductive harm. For more information go to P65Warnings.ca.gov.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.