This heavy duty deodorizer utilizes formaldehyde as the active ingredient to control the most difficult malodor challenges.• Bio/Chemical Type: Chemical• Formaldehyde: Yes• Deodorant/ Scent: No Deodorant/ Scent• Unit Size: 2.25 Ounce• Unit Type: Packet• Unit Quantity: Bag Of 12 Treatments• Packaging Language: English Cost Efficient Built To Provide Exceptional Levels Of Durability | Valterra Waste Holding Tank Treatment