A GOOD TRICK: This will be a great potty training trick. Your pets would be more disciplined and smarter FLAT AND WIDE: The button at the top is flat and wide which is good for the dog to hit with his paw EASY TO HANDLE USE: Plastic gasket at bottom to protect floor or wall from potential scratches. Besides, the gasket can also help prevent the dog training bell from slipping PORTABLE AND CONVENIENT: You can take the dog training bells anywhere. No matter what you are going to visit or BBQ, they can be easily moved with your dogs FUN WAY: Fun way to train your pets: Your dog and cat will ring the bells with their paw or nose on order after training. They would let you know when they want to go out or use the restroom