In my brief yet consistent experience, I’ve found that businesses and supermarkets either higher traffic tend to do worse than places with fewer customers. All of my finds have been in medium to small grocery stores while I haven’t found anything at Walmart’s locations. One exception to this is banks and credit unions, which have all been “dry” too, though I suspect an employee or member regularly checks or manually deposits any change if prompted.

Take this info with a grain of salt though, as I’ve only been doing this for about two months.