How to make a dog treat that would be able to be put in stores.

I make my own dog treats, and would like to sell them in the pet stores. The only problem is, they are only good for a few days. What type of ingredient would I need to have a long shelf life? Thank You Gail

Chef's Comments ~ You may want to consider a natural preservative. You can find a few options over at our friends at K9 Cakery. I hope this helps. :)