INSIDE A WOMEN'S restroom on the southwest concourse of Atlanta's Mercedes-Benz Stadium, Scott Jenkins, the stadium's general manager, reaches down and, without hesitating, places his right hand on the floor. Uric acid, he says -- you know, the corrosive compound in our urine that often gets spilled by the gallon inside stadium bathrooms just like this one -- can eat through regular epoxy-based paint in practically no time at all. Which is why, before the $1.6 billion MBS opened in 2017, Jenkins made sure every one of his bathroom floors was coated in the shiny, space-age, dual-system polymer under his fingertips right now.