EDIT: It looks like this is no longer available.
If you'd like a voucher for a free bag of Eukanuba dog food, then scroll to the bottom of their page and sign up for one. I just mentioned to my dog that she'd soon be getting free dog food, but I don't think she was all that excited.
Come to think of it, she's always gotten free dog food since I've been paying all these years! Fingers crossed she has a stash of cash hidden under her crate or else I'm out quite a bit of money.