Scent is a powerful tool during potty training whether you are housetraining a puppy for the first time or trying to re-train your adult dog to “go” in a new location. Simple Solution Puppy Aid Training Spray can help train your pet where to urinate. Simply spray a small amount of this product on either the K9Grass™ or gravel you are using in the trays of your Pet Patio Potty™ system. Many dogs are attracted to the scent and will be inclined to urinate in the area where it has been sprayed. This product may help to shorten the time required for housetraining. The length of time required for training varies from pet to pet and is dependent in part on the amount of time that you have to devote to the training process. 8 fl.oz. spray bottle. Note: No shipping is charged for this item when it is ordered at the same time as a Pet Patio Potty.