b' A great and fun way to house train your dog is train her to communicate to you when she needs to go out to potty is by teaching her to ring a bell. This is best taught after your dog seems to prefer to go outside to potty and you would like to give her a good way to communicate that to you. This works especially well for dogs who only a few accidents or have accidents by doors. Teaching your dog to ring a bell prevents her from needing to resort to such uncivilized behavior as scratching on the door or barking to tell you to let her out. Features - Color: White and black. - Material: Iron and plastic. - Size: Approx. 7.2 x 7.2 x 4 cm. - Flat and wide button, easy for your pet to ring. - Pleasant sound, loud enough even you are in another room. - Good way to communicate to you when they needs to go out. - Teaching your dog to ring a bell prevents her from needing to resort to such uncivilized behavior as scratching on the door or barking to tell you to let her out. '