I got to be a treat snob about the same time I switched Auggie over to Canidae from Nutro. He was still in training classes so he got LOTS of treats, so I wanted to make sure I wasn't shoveling crap down his throat, LOL. I started getting most of his treats at a store besides PetSmart where pretty much everything was organic and high quality, and picking out a few things at PetSmart and another small pet store (Charlee Bears, Newman's Own, Mother Hubbard) - it's become habit. That's what he eats so that's what I buy to replenish his stock!
But a few "crappy" treats once in a while is no big deal, IMO! Unless you're giving a lot of treats like I was/do, I don't think it's much to worry about. =>