The Scrub Ninja from Auto Fiber is my go to tool for interior agitation. I still love using brushes as well, but for speed and efficiency nothing is better than the Scrub Ninja!

Scrub interior vehicle surfaces like plastic, leather, vinyl, and upholstery clean with the brush-like, bristle-type fabric found in this 3-pack of sponges.  The firm but gentle scrubbing sponge fibers get deep into fabric pours and contours. Nylon Bristle on one side and Microfiber on the other!