The first ingredient for these is wheat gluten. I fed my puppy his first one because it came with the Kong and he seemed to like it so I bought a box of them.
This isn't a problem is it? Do they get their wheat gluten from China?
You can put a lot of things in a kong... fruit, veggies, certain leftovers.... you can even put kibble or other food rolls in, and freeze them. Cheza's fave is mac and cheese