More than likely, the pic was taken at a "normal" Citgo station, at least the one's that I've encountered.
On one occasion, I had to stop at a Mc Donalds, not a myst shop. It was so deplorable, actually worse than the one posted, that I called the police department due to the fact, that there was a bus load of children in the store.
I then, contacted the Health Department and asked for an immediate follow up - yes, I was employed by them at that time and the director sent an investigator immediately.
The toilet had backed up, you sure don't want to know any more.