To effectively shampoo the interior of a car, thoroughly vacuum the interior, use a stain remover to spot clean, then shampoo the interior using a scrub brush and a foaming carpet shampoo. Treat the interior of the car with a fabric protector.Continue Reading
Prior to shampooing, use a shop vacuum to remove all dirt from the fabric and carpet. Ultimate Wash car wash recommends using a baseball bat or another heavy item to pound the seats until more dirt comes out, then vacuum again.
Use a multipurpose degreaser to remove tough stains. Apply the degreaser to a hidden area of the carpet or fabric before applying it to visible areas to ensure it doesn't discolor the material.
Spray foaming carpet shampoo on the carpet and fabric in the car. Use a strong scrub brush to thoroughly scrub the interior. When the foam dissolves, use a dry towel or cloth to wipe down the carpet. Roll the car windows down, and let the interior dry completely. Once dry, spray a fabric protector such as Scotchgard on the seats and carpet to protect the material from stains, oil and water.