Why don't you try to make/cook something for them instead? Aside from saving $, you'll be sure that only the ingredients good for dogs will be in there.
Here's the recipe of the treat I always give my dogs.
CHEESY DOG BISCUITS
1 1/2 cups whole wheat flour
1 1/4 cups grated cheddar cheese
1/4 pound margarine -- corn oil
1 pinch salt
1/4 cup Milk -- or as needed
Grate the cheese into a bowl and let stand until it reaches room temperature.
Cream the cheese with the softened margarine, salt and flour. Add enough
milk to form into a ball.
Chill for 1/2 hour. Roll onto floured board. Cut into shapes and bake at 375
degrees for 15 minutes or until slightly brown, and firm.
Mine love them so much.