Effective Potty Training - Teach your pet to ring a bell to go out or go to the toilet, instead of scratching at the door and barking for your attention, the top button is flat and wide, this which is easy for a dog or cat to press it, a set of two bells can be placed outside or inside the door. Non-slip rubber bottom - There is 3 rubber feet under the bottom that keep the bell in place. It will not be easy to slip on the floor and can also protect the floor to prevent scratches. For small dogs and cats---This palm-sized pet trainer with a diameter of 7.2 cm (2.84 inches) is made of stainless steel, ABS plastic and features a stylish paw print. Clear Ring --- Since it is not hanging on the door, the pet can press the bell with the paws to increase the sound and avoid missing sound signals. How to train your pet --- STEP 1: Place the bells on the doorknob.STEP 2: When your dog needs to get out, take him to the doorbells, ring the bells with his paw and give him a command, then open the door to let him out. STEP 3: Repeat the process over and over when your dog needs to go outside, for three weeks or less, always giving the same command and praise.