I buy the beef shin bones filled with peanut butter flavored stuffing (whatever that is!) at Southern States. They are $2.79 each and last a long time. Although I have to say they like the chicken flavored Nylabone large size that looks like a hand with knuckles just as much. The beef bones are pretty large, thick and don't splinter. I buy three every weekend so I can get some peace and quiet! :lol: They just keep recycling them, hiding, finding and thinking they are brand new every week!