Having to use the bathroom in public can be very nerve-wracking. Who knows what kind of condition that bathroom is going to be in when you go to use it. And it's not like we all have a George Costanza to tell us where the best public bathroom is.

Video courtesy of santiagokal

Thanks to Restaurant Business Online you now know what fast food chains have the cleanest, and the filthiest bathrooms. Here are the 5 cleanest bathrooms.

  • Chick-fil-A
  • Culver's
  • Potbelly Sandwich Shop
  • WHATABURGER
  • Caribou Coffee

And now for the filthiest.

  • Sonic
  • Popeye's
  • Little Caesar's
  • McDonald's
  • Jack in the Box

The unfortunate part of this though is that none of the places had more than 65% of people saying the places had clean bathrooms. So even if the restaurant is in the top 5, you have to remember it's still a fast food chain. And chances of a squeaky clean bathroom are just slightly above 50%.