People often remain perplexed, thinking about how to wash car seat covers! Well, it is not as hard as it seems to be! Most of the dog car seat cover materials can be machine washed, and thus, you do not have to put in much effort to wash them or clean them when they are dirty. And when it comes to waterproof seat covers, you can simply rub off the dirt with a brush or a plain cloth. Also, you can add a cup of vinegar to the machine wash detergent as it helps the odor to fade away.