Not only are these brushes great for auto use, they are awesome around the house. Say you spill red wine on the carpet and you are able to scrub away most of the stain. That is where the drill brushes come in.
Spray the area down with some spot cleaner I have found to be the most effective. Next attach the drill brush to your cordless drill. Slowly engage the drill on a low speed then increase the speed.
Keep the stained area rather moist while using the drill.