Gotta disagree. I've taken many interstate trips across the U.S. and must have used the bathroom in a truck/travel stop dozens upon dozens of times; I've never

Gotta disagree. I've taken many interstate trips across the U.S. and must have used the bathroom in a truck/travel stop dozens upon dozens of times; I've never once seen a disaster. (No doubt due to heroic efforts by the staff, but still.) 99% of the time they have all three of soap, water, and clean surfaces. Much better luck than with auto-oriented gas stations, which often are as you describe.