I went to a Wal-Mart in Dallas (on my way to the World Series!....sorry), and 100% on the masks there. I'm sure mileage varies depending on where one is. I did stop for gas in Gainesville, TX on the way home and experience the zero mask gas station Bernie referred to above. It was pretty jarring, because even in Wichita, KS (where I live) mask compliance at places like gas stations, grocery stores, etc. is approximately 100%.