I only have one dog so fighting isn't an issue here. I order mine from AMD (PM her if you want specifics). Her website is
http://www.westbrookdog.com. I pay via paypal and they arrive fast. The issue with the Merrick bully sticks is they stink. You can smell them even if you are sitting on the couch and your babies are chewing on the floor. AMD's don't stink and Scooter loves them more than any other bully I have ever tried. I normally buy her 7' sticks but since she is currently out until late Sept, I had to buy some 5' sticks. They are good too. I will buy 30 at a time for Scooter because he is a serious chewer and loves them.
I recommend AMD's bully sticks and if you try them, I hope your babies love them as much a Scooter does.
Good luck!