Chamois can destroy nearly any "indestructable" toy on the market. But I've found that in addition to kongs and nylabones, the Orbee tuff toys from Planet Dog tend to stay around for longer than most (though not the flyer, that gets destroyed in very short order). They have the added benefit of a minty flavor/scent when new that the dogs love and that makes their breath a bit less, well, doggy. I've had less success with the Cuz toys though the pups love them and the latest batch have retained feet longer than previous ones, and we have two regular wubbas that are outside fetch toys and holding up OK (the snugga, however, had a VERY short life in our house)...