I had been parking a car in my workshop, and the workbench (normally in the center of the bay) was rolled off against the wall and not accessible. It stayed clean for months.
On Wednesday, I moved the car out and put the workbench back in position. By Thursday it was collecting junk. Yesterday (Friday) I had to tinker with something and was down to working in a small area the size of a lunch tray. Time to clean up and it's only been 2 days!!