[krackersmom2]

DO take a caresheet with you! Ask to speak with the department manager, not just a sales associate. I would mention that you enjoy keeping hermit crabs and prefer to purchase crabs from stores with healthy populations.
You might also ask the Wal Mart with the better set-up what their care policy or guidelines are and mention what you saw at the other Wal Mart. It could be that the better Wal Mart has a crab enthusiast working there You could say, "Wow, I noticed that you are taking good care of the hermit crabs! I was in another local Wal Mart and their crab set-up was awful and the population was either dead or dying. What are you doing differently?" Be sure to thank them for talking to you.