The housetraining pads contain a combination of two pheromone scents that encourage elimination and a third scent that lures canines to the pad.Pads are odor-less to humansAdhesive strips help keep pads secure to the floor and prevent pads from shifting while your puppy is walking on themAdd-a-Pad design with adhesive strips allows you to customize the elimination areaIncludes free training bookletAvailable in a variety of sizes