This 16 ounce Yard Odor Eliminator (formerly Yard Odor Killer) Concentrate Refill makes 32 ounces of stool and urine deodorizer. Just pour contents into your empty Yard Odor Eliminator Spray Bottle and fill rest of bottle with water. Yard Odor Eliminator safely and effectively eliminates stool and urine odors on any outdoor surface. Safe to use on grass, plants, shrubs, patios, kennels, dog runs, swing sets, fences, block walls or any other surface where odors arise due to pets. Yard Odor Eliminator quickly destroys offensive odors at their source: not a masking agent and no disinfectant smell. Concentrated formula covers up to 15,000 square feet. Active Ingredient: Alkyl Dimethyl Benzylammonium Chloride. Note: This refill bottle does not come with sprayer/hose attachment.