If you have water stains on your car seat, there are a few things you can do to try and remove them. The first step is to try and determine where the stain is located. Once you know where it is, you can start trying to remove the stain using a variety of methods. Some people recommend using a vacuum cleaner with the hose attachment to suck up the water and stain. Others suggest using a wet cloth or sponge to dab at the stain and then rubbing it with a dry cloth or paper towel. If all of these methods fail, you may need to take your car seat to a professional cleaner. ..