How to clean Car Flooring: This is the part I’m the most proud of. I did essentially the same thing as with the upholstery and it worked WONDERS. Vacuum large crumbs. Spray the floor with Detergent Spray (This is why I used scented because the scent stays in the car and makes it smell wonderful.) Rub the flooring with the non-abrasive scouring pad. Then vacuum with the rollervac attachment. And seriously, this made the biggest difference! I’m very proud of how clean my car floor is.