If you sign up for their newsletter, you'll be able to print a $5.99 coupon for Halo dog treats. Chances are that wherever they're sold nearest you won't have them priced for much higher, so you should be able to get them for free or very cheap.
I'd never heard of this brand before, but a quick search through the archives shows that I posted a Halo freebie back in 2006.Whoops. I guess this proves that I have the memory of a goldfish. Another similar trait: we both constantly ram headfirst into a clean glass. I was 17 before I finally grasped the concept of a window.