Here's how you can get this deal too!!
* You must have an Amazon Prime account (or sign up for a free 30-day trial)
* Under "Your Account", click on "Your Pets"
* Make a new pet profile on one of your pets
* You will now have a $10 coupon to use on pet food (I didn't see it until I clicked on a product, then there was a note at the top of the page saying I had a $10 coupon to use that would be automatically applied at checkout)
* Search through Purina pet food for the product you want and find one with a 50% clippable coupon - clip it
* Select "Subscribe & Save" - this will add the item to your cart
* Click on Cart and checkout! Both coupons should apply to your order!!