Really good!

I use this app to help us find a place to crash for the night when were traveling and cant afford a hotel. Im not sure if the filters are 100% accurate, especially when figuring out if store is 24 hours (few are not). I find some of the "possible parking" options vague on the user reviews since laws change and such so sometimes you still have to call to be certain. Even so, its much easier to find locations here than scrolling through lists online which arent location specific to where you are that very minute.

drummergurl about Walmart Overnight Parking, v4.1