They use to but I heard they had problems with some that moved in rather then short term. Have not seen any since. But you should contact store and ask. Best way to know for sure.
Across the country Walmart has been friendly to people who do things like that. As the other commenters pointed out, you should be careful. If you want to be certain, contact manager of the store in question. He may tell you it is at your own risk.
Be careful
Yes I see people doing that sometimes but I don't know if it is OK with the police.
Thanks! Your answer is awaiting moderation.