Due to the numerous recalls of dog treats, especially the ones made in China, I would advise not buying them.  I now make my own dog treats.  They contain no preservatives or chemicals and are all natural.  They need to be refrigerated due to no preservatives.  For recipes, Google dog treats.  There are numerous ones to choose from.  Try out several and see which ones appeal to your dogs.  To fancy them up, I bought dog bone cookie cutters on Amazon.  My dogs are different sizes, so I have a cookie cutter in the size appropriate for each dog.  Have fun with this and your dogs will love you for it.