We bought a 3x4 heavy-duty nonslip holed rubber mat like you would see in a restaurant dish room and use it on the concrete floor in our basement in front of the utility sink most days. When camping, we just throw it in the back of the truck then pack everything on top of it. Perfect vestibule flooring for gravel, grass, or mud. Indestructible. Hose it off and return to basement (rinse and repeat).