Keep your septic tank working at optimum levels with Coleman liquid deodorizer. It helps to break down waste materials and toilet paper in the tank to prevent backups. The fresh minty fragrance acts as a tank deodorizer as well, eliminating odors in your home. It's also biodegradable and safe to use for most septic systems. Coleman liquid deodorizer features easy to use instructions, so you can keep your tank at optimum levels without having to hire a plumber.