Tired of lingering urine and stool odor left behind by your dog? Yard Odor Killer effectively eliminates stool and urine odors instantly. This is not a masking agent and is safe to use around children, plants, grass, and pets. This refill can be used with any hose sprayer or with your Green - Tree Sprayer. Simply attach any standard garden hose to the special nozzle and spray away. covers up to 15,000 square feet.