Coupons in box of Milk Bones

Found in a box of Medium sized Milk Bones (regular flavour). They all seem to include a special box where the cashier has to fill out the selling price of the item at time of purchase... :shrug:

http://img824.imageshack.us/img824/3...kbones001a.jpg

Save $0.75 off any 118g Essentials Plus+ Long Lasting Chew
Expires: April 30th, 2013
UPC: 66905080

Save $0.75 off any 624g Essentials Plus+ Biscuit
Expires: April 30th, 2013
UPC: 66905077

Save $0.50 off any 113g Soft & Chewy Treat
Expires: April 30th, 2013
UPC: 66905051

Save $0.50 off any 475g Mini's Biscuit
Expires: April 30th, 2013
UPC: 66905093