When I wash my car, I always have a vacuum cleaner, a pressure hose, a sponge, a brush, and detergents with me. I start cleaning from the inside of the car. This way, you will not dirty the vehicle from the outside when you clean the interior. I also advise you to buy a solvent if you have old stains.
But the easiest way, of course, is to go to the car wash. For a small fee, they will wash the whole car for you, and you will rest. I realized the advantages of cleaning services after I turned to https://cleansolutionllc.com/commercial-floor-cleaning. Their employees cleaned the floors in my office so quickly and efficiently that now I only do general cleaning.