Hi Karlee. One thing to remember is to pick the correct size toy for your dog. Large dogs require large toys. Large toys means more rubber. Also, solid rubber toys are more durable than their hollow counterparts. www.essentienterprises.com will soon import the most durable dog toys from www.SumPlast.com into the United States. Sum-Plast has been manufacturing pet products since 1974. If you contact Essenti directly, they will help you pick the right toy for your pooch and sell it to you directly. All of SumPlast toys are eco-friendly. They are made of thermoplastic which makes them float in water. The scent is nothing like any other toy. You or your doggie will NEVER smell the rubber because it is not made of natural rubber Tell the owner, Sebastian that Derek sent you. Thank you. D.