At least as far as buying red wrigglers go. Walmart is on my bad side right now because they had previously mislabeled some squash plants I bought as cucumbers. I didn't figure that one out until the fruit was coming in, the bastards.
I bought worms today for my growbeds, and didn't think anything of the weird rubberized stuff they were packed in. Well, hours later, I checked in on how they were doing in their new home. Long story short: the ants are having a feast.