The most important thing is to be patient. Purchase a variety of toys with different textures and see which one your kitten prefers. Be sure to cover up any wires as best you can, too. Sprays are hit and miss since they don't always deter a kitten/cat. Many grow out of the habit of chewing on wires, it's just a matter of time. When you first get a kitten, for instance, they usually don't know that their claws are sharp and risk hurting their owners. It takes time and patience yet slowly but surely they learn not to get their claws out when playing with their owners.