I have never had a dog that's even remotely interested in Nylabones. Even my chewing machine Pit mix rejected them, and he ate carpet and cardboard. I have a Nylabone I bought for my Beagle about 30 years ago. I't rough in spots, but 95% intact after a half dozen dogs checked it out.
Gumabones are a different story. The pit mix would destroy one in less than a couple of minutes. It got to be pretty expensive.