These wholesome chickens contain no preservatives or additives of any kind. We source our raw materials from healthy, sustainably farmed chickens fed on a vegetarian diet free of hormones or antibiotics. This product is entirely made in the USA—from egg to pooch—All American! It is NOT your typical rock-hard chicken jerky and breaks very easily to give you precise portions. We love all of our treats from EcoPawz, but this is the one that’s going to be taking care of us when we’re old. The one that you put the oxygen mask on first when the plane starts a rapid descent. We LOVE this stuff.