If you are going to buy them i recommend
www.BeyondSpoiled.com
Those are the only ones that i have seen that DONT SMELL!!! The others that i have tried giving require many hours of cleaning and laundry because Chewy only likes to eat them in her bed or mine. Beyond Spoiled in the store of a YT member and they are like 5 for 5 dollars. Small price to pay for the only activity in the world that keeps Chewy occupied when i am busy.