Train Your Pet Behaves With Manner: Ideal training gadget to treats game, potty training, housetraining and housebreaking for your pets, and it also can be desk call bells when you are in stores, hotel, pub, restaurants, etc No Need Of Any Installation: Easy to install and use. Simply locate it on any flat place, such as room floor, ground, and lawn. Teach your pet baby, dog, kitten or others to hit the middle button with their paw or nose to ring, which is easily done by even by small pet cause the bell high for 45mm only, they dont need to raise paw too high or crane their neck to reach, they reach and hit in a more natural and comfortable way For Small Dogs and Cats: This palm size pet training with diameter 2.8 inch/7 cm, and the bell is made of stainless steel, ABS plastic and has cutely paw print. How to Train Your Pet: STEP 1: Place the doorbells on the doorknob. STEP 2: When your dog needs to go out, bring them to the doorbells and ring the bells with their paw and give your dog a command, then open the door to let them out. STEP 3: Repeat the process again and again when you dog needs go out, for three weeks or shorter, always giving the same command and praise.Then you dog will be remember this way.