
No toy is truly indestructible but I've found with my girl tuffys grade ten toys realy good, and one year at crufts I brought a gonuts I got the black rubber ring as they said it was the strongest one they do. They also replace it for free (u pay the postage) if your dog gets down to the red core. She loves it and no bits missing yet. Also when getting toys go for a size bigger than your dog needs, mine destroys them if she can get her back teeth on them so by getting a bigger size she can't do that.
This year Fay is getting one of the bowls that slows there eating. I get her those smart bones, she loves them and there ment to be safe as there's no rawhide and there soft unlike real bones. She doesn't get them often due to the price.
You could maby try a diffrent chew, if you havent tryed things like rabbit ears, lamb ears, venison ears, duck wings ext.