Max Control Waste Digester Odor Eliminator Drop-In Pouch - 12-PackDometic Max Control-Natural Holding Tank Treatment eliminates odors and effectively breaks down waste in your sanitation holding tank without the use of formaldehyde or bronopol. The fast-acting proprietary enzyme/bacteria formula enhances beneficial bacteria and will continue to work and benefit downstream systems like septic or municipal treatment facilities. A light, appealing fragrance means Max Control-Natural works for portable and gravity toilets and can be used in black or gray water tanks. California compliant and approved for use throughout North America. Use 4 oz. of liquid per 40-gallon black or gray water tank treatment.Features: Contains a highly effective odor-controlling bacteria-based technology Enzymes break down waste solids to maintain a clog-free environment Has a light, appealing fragrance for open system applications (portables and gravity toilets) Helps keep tank sensors clean and unobstructed Works in black or gray water tanks Less packaging material per dose than most competitors enzyme products No formaldehyde or bronopol Concentrated formula - 1 pouch or 4 oz. liquid per 40-gallon black or gray water tank treatment table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Truck Freight: No Oversized: No