I bought some kind of bones from Pepper's in Solomon's and they are the only bones my destroyer dogs don't destroy and can't chew up entirely. They are some kind of marrow bones and they come with filling in them, but I have to take it out because it gives the dogs diahhrea. So, I just scoop the stuff out and give the dogs the bones. They love the bones. I've had them now for about 4-5 months and will have them for that much longer. I have a boxer/pit bull mix, a lab/hound mix, a terrier mix and a german shephard/lab mix.
these bones are Awesome! they are the only ones my dogs can't destroy. I buy the ones without filling. Bought some in PA, but they are not anything like the ones from Peppers.